<prompt> Reverse CAMP test is positive for ?Streptococcus agalactiaeListeria manocytogenesClostridium perfringensVibrio parahemolyticus  <response>: Ans. is c i.e.,Clostridium perfringens CAMP positive- Area of increased hemolysis arrow head around staphylococcus streaks by streptococcus agalactiae.CAMP test is also positive in Listeria monocytogenes, Reverse CAMP test is positive in Clostridium perfringens.Reverse CAMP test : It is used to differentiate Cl perfringens from other Clostridia. CAMP positive group B streptococcus is streaked in Blood agar and Cl perfringens is streaked perpendicular to it. There is enhanced hemolysis arrowhead between the growth of Cl. 