A child come with fever, cold, cough, membrane over tonsils; nasal swab is taken, culture should be done on which medium for earliest diagnosis ?
Loffelers serum slop
L. J. media
MC Conkey's Agar
Citrate media
Ans. is 'a' i.e., Loffelers serum slop Diphtheria bacilli grow on Loeffler's serum slope very rapidly and colonies can be seen in 6-8 hours, long before other bacteria grow.