Example: biology
Slanted Cells
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Chapter 5 - Bacteriology - FWS
www.fws.gov2. Gram positive: cells retain the crystal violet and remain purple to dark blue. K. QUALITY CONTROL: Use a known bacterial culture as a control for each case history to assess correct staining and interpretation (cultures can be obtained from ATCC® and maintained at 2-8°C for long term use). Additionally Fisher Scientific has gram control