Summary. The activity of five lysosomal acid hydrolases, β-galactosidase, β-acetylglucosaminidase, β-glucuronidase, acid phosphatase and α-mannosidase, was measured in liver biopsy specimens, obtained with the fine-needle aspiration technique from 24 carefully selected, strictly normal adults. Higher activities were noted than earlier described in less strictly normal controls.
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Lundquist et al. (1969) studied this question.