“…These cells are incapable of glyconeogenesis (Stjernholm, Noble, Dimitrov, Morton & Falor, 1969) or fatty acid synthesis de nouo (Majerus & Lastra, 1967). Glucose is incorporated into lipids predominantly as glycerol (Miras et al, 1967) whereas acetate is incorporated via mitochondria1 elongation of endogenous fatty acids (Miras, Mantzos & Levis, 1965 ;Ehrhart, Balachandran, Butkus, Lewis & Robertson, 1971). Lymphocytes incorporate acetate in the same manner (Blomstrand, 1966), though there is some evidence that phytohaemagglutinin-stimulated cells are capable of synthesis de nouo (Blomstrand & Liljeqvist, 1972).…”