Myocardial infarction in experimental animals lhas been successfully produced by ligating coronary artery branclhes(l), by injecting obstructing materials into the coronary vessels themselves(2), by external compression(3), and by intravascular electrocoagulation(4). Also, in rats Tlhomas an(l Hartroft were able by dietary means to procluce coronary thrombosis associated witlh myocardial necros...

The role of quinones in electron transport has attracted considerable recent interest (27). Coenzyme Q1O, which is present in plant mitochondria, is closely related to the respiratory chain (6), and the very similar benzoquinone, plastoquinone, appears to be involved in photosynthesis (7) Vitanmin K-type naphthoquinones have been imlplicated in respiratory electron transfer (30), oxidative phos...

Americani. The Jensen (genetic) positioin on racial (lifferences in intelligence is well alnswered l)y PettigTew's consi(leration of environmental influences on intelligence ancl iintelligence testing (even tlhotuglh Pettigrew's article precdates the Jenseni controversy). Also consi(lere(d by Pettigrew is the social (lefinition of mental illness andl the impact of social class in creating al)pl...