| Allergen | Species - Scientific Name | Species - Common Name | Allergen Type | Allergen Description | Class |
| Ber e 1 | Bertholletia excelsa | Brazil nut | foods | 2S albumin
| IUIS |
| Ber e 2 | Bertholletia excelsa | Brazil nut | foods | 11S globulin seed storage protein
| IUIS |
| Bet v 1 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | homolog: pathogenesis related protein PR10
| IUIS |
| Bet v 1.0101 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1a
| IUIS |
| Bet v 1.0102 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 224
| IUIS |
| Bet v 1.0103 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2230
| IUIS |
| Bet v 1.0201 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1b
| IUIS |
| Bet v 1.0301 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1c
| IUIS |
| Bet v 1.0401 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1d
| IUIS |
| Bet v 1.0402 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1h
| IUIS |
| Bet v 1.0501 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1e
| IUIS |
| Bet v 1.0601 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1f
| IUIS |
| Bet v 1.0602 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1i
| IUIS |
| Bet v 1.0701 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1g
| IUIS |
| Bet v 1.0801 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1j
| IUIS |
| Bet v 1.0901 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1k
| IUIS |
| Bet v 1.1001 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1l
| IUIS |
| Bet v 1.1101 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 1-Sc1
| IUIS |
| Bet v 1.1201 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 1-Sc2
| IUIS |
| Bet v 1.1301 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 1-Sc3
| IUIS |
| Bet v 1.1401 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1M
| IUIS |
| Bet v 1.1402 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Bet v 1N
| IUIS |
| Bet v 1.1501 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC11
| IUIS |
| Bet v 1.1502 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC31
| IUIS |
| Bet v 1.1601 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC181
| IUIS |
| Bet v 1.1701 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC21
| IUIS |
| Bet v 1.1801 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC25
| IUIS |
| Bet v 1.1901 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC34
| IUIS |
| Bet v 1.2001 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC45
| IUIS |
| Bet v 1.2101 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC63
| IUIS |
| Bet v 1.2201 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC681
| IUIS |
| Bet v 1.2301 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | BVGC70
| IUIS |
| Bet v 1.2401 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 167
| IUIS |
| Bet v 1.2501 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 184
| IUIS |
| Bet v 1.2601 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2225
| IUIS |
| Bet v 1.2701 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2226
| IUIS |
| Bet v 1.2801 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2227
| IUIS |
| Bet v 1.2901 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2229
| IUIS |
| Bet v 1.3001 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2301
| IUIS |
| Bet v 1.3101 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2296
| IUIS |
| Bet v 1.at10 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at14 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at21 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at37 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at42 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at45 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at5 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at50 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at59 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at7 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at8 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.at87 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.jap1 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.jap2 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 1.jap3 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | N
| non-IUIS |
| Bet v 2 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | profilin
| IUIS |
| Bet v 3 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Calcium-binding protien
| IUIS |
| Bet v 4 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Polcalcin
| IUIS |
| Bet v 6 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | homolog: isoflavone reductase
| IUIS |
| Bet v 6.0101 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | 2'-hydroxyisoflavone reductase; homologue Bet v reductase; EC 1.3.1.45
| IUIS |
| Bet v 6.0102 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Allergenic isoflavone reductase
| IUIS |
| Bet v 7 | Betula verrucosa (Betula pendula) | White birch | tree Fagales | Cyclophilin; PPIase; Rotamase; Cyclosporin A-binding protein; Peptidyl-prolyl ci | IUIS |
| Beta v 1 | Beta vulgaris | Sugar beet | foods | Che a 1/Ole e 1 homologue | IUIS |
| Beta v 1.0101 | Beta vulgaris | Sugar beet | foods | Che a 1/Ole e 1 homologue | IUIS |
| Beta v 2 | Beta vulgaris | Sugar beet | foods | Profilin, pollen | IUIS |
| Beta v 2.0101 | Beta vulgaris | Sugar beet | foods | Profilin, pollen | IUIS |
| Bla g 1 | Blattella germanica | German cockroach | insects | Bd90k
| IUIS |
| Bla g 1.0101 | Blattella germanica | German cockroach | insects | clone 1; Similar to secretory protein G12
| IUIS |
| Bla g 1.0102 | Blattella germanica | German cockroach | insects | Bd90k - Cr4H
| IUIS |
| Bla g 1.0103 | Blattella germanica | German cockroach | insects | clone 2
| IUIS |
| Bla g 1.02 | Blattella germanica | German cockroach | insects | Similar to secretory protein G12
| IUIS |
| Bla g 2 | Blattella germanica | German cockroach | insects | aspartic protease; EC 3.4.23
| IUIS |
| Bla g 36kD | Blattella germanica | German cockroach | insects | N
| non-IUIS |
| Bla g 4 | Blattella germanica | German cockroach | insects | calycin
| IUIS |
| Bla g 5 | Blattella germanica | German cockroach | insects | glutathione transferase; Glutathione S-transferase; GST class-sigma; EC 2.5.1.18 | IUIS |
| Bla g 6 | Blattella germanica | German cockroach | insects | Troponin C | IUIS |
| Bla g 6.0101 | Blattella germanica | German cockroach | insects | Troponin C | IUIS |
| Bla g 6.0201 | Blattella germanica | German cockroach | insects | Troponin C | IUIS |
| Bla g 6.0301 | Blattella germanica | German cockroach | insects | Troponin C | IUIS |
| Bla g 7 | Blattella germanica | German cockroach | insects | Tropomyosin | IUIS |
| Bla g 7.0101 | Blattella germanica | German cockroach | insects | Tropomyosin | IUIS |
| Bla g 8 | Blattella germanica | German cockroach | insects | Myosin, light chain | IUIS |
| Bla g 8.0101 | Blattella germanica | German cockroach | insects | Myosin, light chain | IUIS |
| Blo t 1 | Blomia tropicalis | mite | mites | Cysteine protease | IUIS |
| Blo t 1.0101 | Blomia tropicalis | mite | mites | Cysteine protease | IUIS |
| Blo t 1.0201 | Blomia tropicalis | mite | mites | Cysteine protease, Old Name: Blo t 1 | IUIS |
| Blo t 10 | Blomia tropicalis | mite | mites | tropomyosin
| IUIS |
| Blo t 11 | Blomia tropicalis | mite | mites | paramyosin
| IUIS |
| Blo t 12 | Blomia tropicalis | mite | mites | Bt11a
| IUIS |
| Blo t 13 | Blomia tropicalis | mite | mites | Bt6, fatty acid bind protein
| IUIS |
| Blo t 19 | Blomia tropicalis | mite | mites | anti-microbial peptide homolog
| IUIS |
| Blo t 2 | Blomia tropicalis | mite | mites | Group 2 Allergen, unknown function | IUIS |
| Blo t 2.0101 | Blomia tropicalis | mite | mites | Group 2 Allergen, unknown function, Blo t 2.047 | IUIS |
| Blo t 2.0102 | Blomia tropicalis | mite | mites | Group 2 Allergen, unknown function, Blo t 2.046 | IUIS |
| Blo t 2.0103 | Blomia tropicalis | mite | mites | Group 2 Allergen, unknown function, Blo t 2.040 | IUIS |
| Blo t 2.0104 | Blomia tropicalis | mite | mites | Group 2 Allergen, unknown function | IUIS |
| Blo t 21 | Blomia tropicalis | mite | mites | Unknown function, Somewhat similar to Mite group 5 | IUIS |
| Blo t 21.0101 | Blomia tropicalis | mite | mites | Unknown function, Somewhat similar to Mite group 5 | IUIS |
| Blo t 3 | Blomia tropicalis | mite | mites | trypsin
| IUIS |
| Blo t 4 | Blomia tropicalis | mite | mites | alpha amylase
| IUIS |
| Blo t 5 | Blomia tropicalis | mite | mites | N
| IUIS |
| Blo t 6 | Blomia tropicalis | mite | mites | chymotrypsin
| IUIS |
| Bom p 1 | Bombus pennsylvanicus | bumble bee | insects | phospholipase
| IUIS |
| Bom p 4 | Bombus pennsylvanicus | bumble bee | insects | protease
| IUIS |
| Bom t 1 | Bombus terrestris | bumblebee | insects | phospholipase A2, EC 3.1.1.4, phosphatidylcholine 2-acylhydrolase; EC 3.1.1.4
| non-IUIS |
| Bom t 4 | Bombus terrestris | bumblebee | insects | Protease | IUIS |
| Bom t 4.0101 | Bombus terrestris | bumblebee | insects | Protease | IUIS |
| Bomb m 1 | Bombyx mori | Silk moth | insects | Arginine kinase | IUIS |
| Bomb m 1.0101 | Bombyx mori | Silk moth | insects | Arginine kinase | IUIS |
| Bos d 2 | Bos domesticus | domestic cattle | animals | Ag3, lipocalin; BDA20; Dander allergen; Dermal allergen
| IUIS |
| Bos d 2.0101 | Bos domesticus | domestic cattle | animals | BDA20
| IUIS |
| Bos d 2.0102 | Bos domesticus | domestic cattle | animals | N
| IUIS |
| Bos d 2.0103 | Bos domesticus | domestic cattle | animals | N
| IUIS |
| Bos d 3 | Bos domesticus | domestic cattle | animals | Ca-binding S100 homolog
| IUIS |
| Bos d 4 | Bos domesticus | domestic cattle | foods | alpha-lactalbumin; Lactose synthase B protein
| IUIS |
| Bos d 5 | Bos domesticus | domestic cattle | foods | beta-lactoglobulin; Beta-LG
| IUIS |
| Bos d 6 | Bos domesticus | domestic cattle | foods | serum albumin; BSA
| IUIS |
| Bos d 7 | Bos domesticus | domestic cattle | foods | immunoglobulin
| IUIS |
| Bos d 8 | Bos domesticus | domestic cattle | foods | caseins from milk
| IUIS |
| Bra j 1 | Brassica juncea | oriental mustard | foods | 2S albumin
| IUIS |
| Bra n 1 | Brassica napus | rapeseed | foods | 2S albumin; Calcium-binding pollen allergen
| IUIS |
| Bra n 2 | Brassica napus | rapeseed | foods | Polcalcin; Calcium-binding pollen allergen
| non-IUIS |
| Bra o 3 | Brassica oleracea | Cabbage and others | foods | lipid transfer protein | IUIS |
| Bra o 3.0101 | Brassica oleracea | Cabbage and others | foods | lipid transfer protein | IUIS |
| Bra r 1 | Brassica rapa | turnip | foods | 2S storage protein | IUIS |
| Bra r 2 | Brassica rapa | turnip | foods | homolog: prohevein; homolog: pathogenesis related protein PR3; Chitin-binding al | IUIS |
| Bra r 5 | Brassica rapa | turnip | foods | Calcium-binding protein from pollen | IUIS |
| Bra r 5.0101 | Brassica rapa | turnip | foods | Calcium-binding protein from pollen | IUIS |
| Bru m a | Brugia malayi | filarial nematode worm | others | N
| non-IUIS |
| Bru m b | Brugia malayi | filarial nematode worm | others | N
| non-IUIS |