Quellung reaction is seen in -
Ans. is 'c' i.e., Pneumococcus o A suspension of pneumococci is mixed on a slide with a drop of the type specific antiserum and methylene blue. On the presence of homologous antiserum capsule becomes apparently swollen, sharply delineated and refractile.o This is called Quellung reaction.
Group B streptococcus
Staphylococcus
Pneumococcus
Enterococcus
Bacteria