Type VI bacterial FC receptors

摘要

Novel Fc receptors, denoted type VI, are disclosed as reacting with rat immunoglobulins with a reasonable affinity. The type VI receptors are isolated from Streptococcus zooepidemicus strain s212 (ATCC 53698) and Streptococcus zooepidemicus strain RSS-212 (ATCC 53697) culture supernatants. These receptors, or the microorganisms which produce them, are useful in immunoassays.