“…Whereas brain itself contains only minute amounts of hematosides (Suzuki, 1964), several extraneural tissues contain these substances as the major ganglioside type. This has been demonstrated for spleen (Svennerholm, 1963b), liver (Eeg-Olofsson et al, 1966), placenta (Svennerholm, 1965), erythrocytes (Yamakawa and Suzuki, 1951;Klenk and Padberg, 1962), and lung (Gallai-Hatchard and Gray, 1966). The major gangliosides of lens (Feldman et al, 1966) and intestine (Vance et al, 1966) have slightly more complex carbohydrate structures but resemble the hematosides in lacking hexosamine.…”