11. Most " Mycobacterium " species, including most clinically relevant species, can be cultured in blood agar . 12. It consists of 0.6 % sodium chloride ( NaCl ) added to a simple blood agar slope. 13. Upon plating " C . indolis " on blood agar , it was found that they were non-hemolytic. 14. Like other cultured on blood agar plates. 15. The organism did not grow on blood agar , required L-cysteine, and showed significant quantities of branched-chain fatty acids. 16. All " Bacillus " species grow well on 5 % sheep blood agar and other routine culture media. 17. Alpha-hemolytic species cause oxidization of iron in hemoglobin molecules within red blood cells, giving it a greenish color on blood agar . 18. On egg media and sheep's blood agar , the colonies are flat with a distinctive pigmentation ranging from deep yellow to orange. 19. True infection with GABHS, rather than colonization, is defined arbitrarily as the presence of > 10 colonies of GABHS per blood agar plate. 20. The alpha-hemolytic bacteria are ones that exhibit a partial hemolysis with green coloration when grown on sheep blood agar ( see image .)