Streptococcus – Section 111. Crystal violet blood agar is a selective medium forA. β-haemolytic streptococci B. Staphylococcus aureus C. Corynebacterium diphtheriae D. Mycobacterium tuberculosis Show Answer Correct Answer: A. β-haemolytic streptococci Advertisement Pages: 1 2 3 Tagged:MCQsMedical ScienceMicrobiologyStreptococcusPlease Share