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G. ROBERTO BURGIO, MD; FRANCESCA SEVERI, MD; ALBERTO G. UGAZIO, MD
Clinica Pediatrica dell' Università di Pavia 27100 Pavia, Italy

Am J Dis Child. 1977;131(12):1407.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Sir.—The article by Dr Steele and colleagues (Am J Dis Child 130:1218,1976) rightly underlines the need for reliable and simple tests of cellular immune competence to permit early detection of immunodeficiency diseases in infancy and childhood.

In a series of 608 individuals, ranging in age from newborn to more than 70 years, whose skin was tested with phytohemagglutinin (PHA), we previously reported^1,2 an overall positivity of 98%; the only negative subjects were ten of 32 newborns. On the other In a series of 608 individuals, ranging in age from newborn to more than 70 years, whose skin was tested with phytohemagglutinin (PHA), we previously reported^1,2 an overall positivity of 98%; the only negative subjects were ten of 32 newborns. On the other hand, skin reactivity to streptokinase assessed in 584 individuals (age range, birth to more than 70 years) was remarkably age-depen dent. Some of these data (concerning subjects of . . . [Full Text PDF of this Article]

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