positive or negative mannitol salt agar plate??!!
Posted 28 April 2011 - 05:04 PM
above is what the mannitol salt agar plate for an unknown I must figure out.
That's where you all come in; Is this a POSITIVE (colonies surrounded by YELLOW zones) or NEGATIVE (colonies surrounded by PINK/RED zones)????????
For those of you unfamiliar with the test, the original agar's color was light red/dark pink.
Given the fact that half is yellow and half is pinkish, I belive that is can still be considered a positive reaction (yellow zones) since some yellow actually appeared. It seems like we streaked it too much, but you guys be the judge...
(ps. i kinda want it to be negative (pink) bc the unknown i believe it is has a negative result)
Posted 28 April 2011 - 06:24 PM
Posted 28 April 2011 - 06:45 PM
Posted 06 May 2011 - 08:46 AM