- Abalone Bio - Antibody therapies.
- Abbiotec - Research antibodies & peptides.
- Abcam - Antibodies.
- Abcentra - Monoclonal antibodies.
- Aceragen - Rare disease therapies.
- Acticor Biotech - Stroke treatments.
- Active Motif - Epigenetics research products.
- Acumen Pharmaceuticals - Alzheimer's treatments.
- Acyte Biotech - Bioprocessing solutions.
- Adagene - Antibody therapeutics.
- AdAlta - i-body platform for drug discovery.
- Adanate - Bispecific antibodies.
- ADC Therapeutics - Antibody-drug conjugates.
- Adcendo - Cancer treatments.
- Adcentrx Therapeutics - ADC therapies.
- Adecto Pharmaceuticals - Monoclonal antibodies.
- Adienne Pharma and Biotech - Rare disease treatments.
- Adimab - Antibody discovery.
- Adlai Nortye - Immuno-oncology.
- Adocia - Diabetes treatments.
- Adrenomed - Sepsis therapies.
- Aegis Therapeutics - Drug delivery technologies.
- Aerium Therapeutics - Respiratory virus treatments.
- Aethon Therapeutics - Cancer therapies.
- Affibody - Affibody molecules.
- Affimed - Immunotherapies.
- Affinity Biologicals - Coagulation products.
- AffinityImmuno - Custom antibodies.
- Agomab Therapeutics - Growth factor inhibitors.
- AgonOx - Tumor-infiltrating lymphocytes.
- Agrisera - Plant antibodies.
- Akamis Bio - Oncolytic viruses.
- Akesobio - Antibody drugs.
- Akiram Therapeutics - Antibody-drug conjugates.
- Albatroz Therapeutics - Antibody-based cancer therapies.
- Alchemab Therapeutics - Neurodegenerative diseases.
- Alderaan Biotechnology - Cancer immunotherapies.
- Aldevron - Nucleic acids, proteins, enzymes.
- Alector - Neurodegenerative disease therapies.
- Alentis Therapeutics - Fibrosis treatments.
- Alethia Biotherapeutics - Antibody-based therapies.
- Alexion Pharmaceuticals - Rare disease treatments.
- Allakos - Allergy and inflammation treatments.
- Alomone Labs - Ion channel research products.
- Amgen - Biotech medicines.
- Amplyx Pharmaceuticals - Infectious disease treatments.
- AnaSpec - Peptides, antibodies, reagents.
- AnaptysBio - Antibody-based immunotherapies.
- Antibody Solutions - Custom antibody services.