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The first step in identifying an organism from a pure working culture is to perform a(n) __________ test. acid-fast staining negative staining endospore staining simple staining Gram stain

Complete Textbook Of Phlebotomy

5th Edition

ISBN:9781337464314

Author:Hoeltke

Publisher:Hoeltke

Chapter1: Introduction To Phlebotomy

Section: Chapter Questions

Problem 10RQ

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Question

The first step in identifying an organism from a pure working culture is to perform a(n) __________ test.

acid-fast staining

negative staining

endospore staining

simple staining

Gram stain

Definition Definition Technique that uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.

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