A modification of Elek's technic to be performed on microscope slides.
D000992:Antitoxins / Q000737:chemistry*; D001419:Bacteria / Q000737:chemistry*; D014118:Toxins, Biological / Q000737:chemistry*
D000992:Antitoxins; D014118:Toxins, Biological
BACTERIA/chemistry; TOXINS AND ANTITOXINS/chemistry