Page 1 of 2: microbiology: factor V ...................

nadu · Credits: 17420 My Scrapbook

Q. Factor V is required for growth of :

1. Haemophillus

2. Staphylococci

3. Neisseria

4. All of above

I know its Haemophillus that requires factor V for its growth……….but ans. given is 4 !

BRAVO · Credits: 45557 My Scrapbook

its haemophilus 4 sure

decembermist · Credits: 41081 My Scrapbook

??????

drsmita_s · Credits: 18649 My Scrapbook

answer is indeed all of the above. though we know that factor V and factor X requirement is for haemophilus, but if you see micro book( paniker), it is given that it is required by staph and neisseria also.

partha_aipg · Credits: 13088 My Scrapbook

oh thats a good thing we learnt. never knew that somehow

partha

determineddoc · Credits: 3359 My Scrapbook My Reading List 2 Books

@drsmita_s... i got it reguarding staph in the book but where is the mention regurding nisseria? could u plz tell me!!

drsmita_s · Credits: 18649 My Scrapbook

it is given in haemophilus chapter, says that satellitism is routinely done for haemophilus but is not very specific as it will be positive also with other factor V requiring haemophili as well as with occasional strains of staph, neisseria and diphtheroids.

parin · Credits: 14530 My Scrapbook My Reading List 1 Books

good one, smita! I also didn't know this..

also know that haemophilus requires factor V.. The strains that require both factors V(NAD) & X(protoporphyrin) are H. influenzae & H. aegypticus..

determineddoc · Credits: 3359 My Scrapbook My Reading List 2 Books

thanx smita!! i got it!

ahmedabaddr · Credits: 205 My Scrapbook

it is a well known fact that factor X and V are required for the growth of Haemophilus and Neisseria .
That is the reason why they grow well on Chocolate agar and not on Blood agar
About Staphyloccoccus just checked they also require the factors

All the best

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