28.1 MB (1.5 MB compressed)
3848 x 2550 pixels
32.5 x 21.6 cm ⏐ 12.8 x 8.5 in (300dpi)
VAN D. BUCHER / SCIENCE PHOTO LIBRARY VAN D. BUCHER / SCIENCE PHOTO LIBRARY
A test for streptococcal infection (strep throat) showing positive culture in Petri dish with beta hemolysis and inhibition zone around bacitracin discs. Culture media is sheep's blood and agar.
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