Why Isn't the Gram Stain Used on Acid Fast Bacteria?

Answer

The Gram Stain test is used to determine the presence of certain types of bacteria. It is not, however, used for acid fast bacteria. This type of bacteria requires the Ziehl-Neelsen Stain.
Q&A Related to "Why Isn't the Gram Stain Used on Acid Fast Bacteria"
The Acid-fast stain is specifically used to identify bacteria that possess a waxy lipid within the structure of their cell walls. Due to the presence of this lipid, water-based stains
http://wiki.answers.com/Q/Why_isn't_the_gram_stain...
Acid fast bacteria are not classified as either Gram-positive or Gram-negative because they do not have the chemical characteristics of either, although the bacteria do contain peptidoglycan
http://answers.yahoo.com/question/index?qid=200612...
In the Ziehl-Neelson method of acid-fast staining, a smear sample is heat fixed, stained with carbol fuchsin (a solution of phenol and fuchsin) heated, rinsed in water, decolorized
http://www.ehow.com/facts_5712522_acid-fast-staini...
Acid fast bacteria have a heavy waxy wall layer that prevents the gram primary stain from entering the cells. I would imagine that they would be clear or would not appear as positive
http://en.allexperts.com/q/Biology-664/Microbiolog...
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