Question

multiple choice question
the ____ stain was developed by __ in ____.

• simple; frances jalock; 1772
• gram; christian gram; 1884
• acid fast; john tubercus; 1902

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Explanation:

The Gram stain is a well-known microbiological staining technique developed by the Danish bacteriologist Christian Gram in 1884. The other options are incorrect: there is no widely recognized simple stain developed by Frances Jalock, and the acid-fast stain was not developed by a person named John Tubercus in 1902.

Answer:

B. Gram; Christian Gram; 1884