“…Electrophoresis has proved useful in examining the biochemistry of vitamins Be (30) and B12 (187, 1087-1094, 2186, 2194), thiamine (1909), biotin (2301), and the flavinoids (70, 434), and for analyzing vitamin mixtures (376). Studies of miscellaneous biochemical substances include polysaccharides (1268,1651), sugars (211,638,1363,1468,1592,1685), amine sugars (1127,(1666)(1667)(1668), heparin (127, 1010), amino acids (590,1007,1364,1517,1568,1968,1969,2469), and peptides (817,1826,1875,2009). A method for preparing radioactive phosphate esters from plant tissues has been suggested (203).…”