0 votes 0 votes Protein A, which has strong affinity to $F_C$ region of immunoglobulin, is extracted from $\text{Saccharomyces cerevisiae}$ $\text{Staphylococcus aureus}$ $\text{Streptococcus pyogenes}$ $\text{Streptococcus sanguis}$ Immunology gate2013 + – Milicevic3306 asked Mar 25, 2018 • edited Nov 4, 2020 by soujanyareddy13 Milicevic3306 7.9k points answer comment Share Follow See all 0 reply Please log in or register to add a comment.