noun, plural an·ti·se·rums, an·ti·se·ra [an-tuh-seer-uh] /ˈæn təˌsɪər ə/.
Examples from the Web for antisera
Only three antisera were produced against formolized antigens, all others being produced against "native" extracts.
All antisera were produced in rabbits (laboratory stock of Oryctolagus cuniculus).
Numerals represent relative amounts of reaction between antigens and antisera.