Hampp R, Kriebitzsch C
Z Naturforsch C Biosci. 1975 Jul-Aug;30(4):434-7. doi: 10.1515/znc-1975-7-802.
The effect of zinc and cadmium on delta-aminolevulinate dehydratase of bovine erythrocytes stored at -30 degrees C for different times was determined. The results show a. storage of erythrocytes leads to an enhancement of the enzyme activity, which after six weeks is 165% (500 muM ZnCl2) respectively 220% (100 muM CdCl2) for red blood cells of calves, and after four weeks in 420% respectively 450% (same concentrations) for red blood cells of adult cattle, b. the older the samples are, the higher is the metal concentrations, needed for activation.
测定了锌和镉对在-30℃下储存不同时间的牛红细胞δ-氨基乙酰丙酸脱水酶的影响。结果表明：a. 红细胞的储存导致酶活性增强，对于犊牛红细胞，六周后分别为165%（500μM ZnCl₂）和220%（100μM CdCl₂），对于成年牛红细胞，四周后分别为420%和450%（相同浓度）；b. 样本越陈旧，激活所需的金属浓度越高。
