Delayed Hypersensitivity Induced in Guinea Pigs by 7, 12-Dimethylbenz(a) anthracene

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Delayed Hypersensitivity Induced in Guinea Pigs

A delayed hypersensitivity to 7,12-dimethylbenz(a)anthracene was elicited in guinea pigs after contact sensitization. This sensitivity was characterized by its time of appearance, histology, specificity, and transfer characteristics. The reaction had its maximal dermal reactivity 24 hr after challenge, was characterized by a mononuclear cell infiltration, demonstrated immunological specificity,...

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Intraperitoneal gelatin sponge implants were used in guinea-pigs to examine the effect of D-penicillamine on the delayed hypersensitivity reaction in vivo. When it was administered daily in a dose of 200 mg/kg for 14 days before sensitisation or for 14 or 30 days before challenge, D-penicillamine increased the number of exudate cells during the onset of the delayed hypersensitivity reaction. Ab...

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Hypersensitivity in Newborn Guinea Pigs

Neonatal guinea pigs during the first 2 weeks of life did not indicate the presence of delayed hypersensitivity intradermally, after sensitization with purified soluble antigens in dose levels that induced detectable delayed hypersensitivity in the skin of adults. Although Arthus type allergy was detectable in newborns, circulating antibody frequently preceded its appearance by several days. Pa...

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ژورنال

عنوان ژورنال: Infection and Immunity

سال: 1971

ISSN: 0019-9567,1098-5522

DOI: 10.1128/iai.3.3.478-480.1971