Experimental evidence of the second signaling system of man.
D000293:Adolescent; D000328:Adult; D000818:Animals; D003210:Concept Formation; D003214:Conditioning, Classical; D004285:Dogs; D005260:Female; D005638:Fruit; D006801:Humans; D007092:Imagination; D007564:Japan; D007802:Language; D008297:Male; D008722:Methods; D012472:Salivation