The Danish physician Hans Christian Gram

A. developed the Gram-stain technique
B. devised the metric system of weights (milligrams, grams, kilograms)
C. developed the procedures for determining whether a particular organism causes a specific disease
D. developed both the Gram stain and the method of determining whether a particular organism causes a specific disease
E. none of the other options presented


A. developed the Gram-stain technique

Biology & Microbiology

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