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satellitism

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satellitism

Post  sakia fazal (2007M041) on Tue Dec 23, 2008 1:14 am

satellitism is the pattern of arrangement of heamophillus influenzae on blood agar strearked with staphylococcus aureus in the centre.

This is because heamophillus influenzae requires 2 factors for its culture i.e 1) X FACTOR- heme or hematin and 2) V FACTOR - NAD ( found in the staphylococcusstreak in the centre.

It is observed as thick colonies at the centre near the streak and decrease daimeter progressively towards the periphery ( due to decreased levels of NAD).

sakia fazal (2007M041)

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