ELECTRON MICROSCOPIC OBSERVATIONS OF DENTAL CALCULUS IN GERMFREE AND CONVENTIONAL RATS.
D003728:Dental Calculus; D004583:Electrons; D005856:Germ-Free Life; D008853:Microscopy; D008854:Microscopy, Electron; D051381:Rats; D012106:Research
DENTAL CALCULUS; EXPERIMENTAL LAB STUDY; GERM-FREE LIFE; MICROSCOPY, ELECTRON; RATS