Staphylococcus aureus yellow vs white strain
decapsulation test

yellow and white strain of Staphylococcus aureus, decapsulation test and hyaluronidase production

Yellow pigmented and nonpigmented strains of S.aureus on blood agar. Both strains give positive decapsulation test with Streptococcus equi ssp. zooepidemicus (hyaluronidase production by S.aureus).