Streptococcus anginosus
which is distinguished by its pinpoint colonies and characteristic
sweet smell on standard blood agar could also be accurately
identified by these features on hair sheep blood agar. The growth
of two different strains of S. pneumoniae, ATCC 49619 and a clinical
isolate, were also compared on standard media and hair sheep
blood media. Both grew as transparent colonies and exhibited ahemolysis
typical of S. pneumoniae on citrated and defibrinated hair
sheep agar. In addition, the clinical strain had a type 3
polysaccharide capsule mucoid phenotype on standard blood
media that was also visible on hair sheep media. Finally, Listeria
monocytogenes grew as large (1 mm) colonies with b-hemolysis
limited to the area underneath the colony on both standard wool
sheep blood agar and hair sheep agar.