CST Exam Review Question no. 487 October 9, 2017 By Rana Waqar Leave a Comment A poisonous substance made by certain Gram-positive bacteria such as staphylococci is called: a. endotoxin b. exotoxin c. fibrolysin d. catalase Δ For More questions please join Our facebook group: https://www.facebook.com/groups/1424167527615419/?ref=group_browse_new
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