Abstract
A purified 230,000 mol wt protein antigen from the lethal mouse malaria parasite Plasmodium yoelii YM which had previously been shown to be highly effective as a vaccine, was tested for its ability to stimulate specific helper T cells and T cells responsible for delayed hypersensitivity. Strong stimulation was found in both assays, but larger doses were required for delayed hypersensitivity, correlating well with the requirements for protection. It is suggested that T stimulation may be a requirement for effective protection by purified antigens in malaria.
MeSH Terms
Animals
Antigens, Protozoan/immunology
Female
Hypersensitivity, Delayed/immunology
Immunity, Cellular
Malaria/immunology,prevention & control
Mice
Mice, Inbred BALB C
Mice, Inbred C57BL
Plasmodium/immunology
T-Lymphocytes/immunology
T-Lymphocytes, Helper-Inducer/immunology
Vaccination
Chemicals
Antigens, Protozoan
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Playfair J H
De Souza J B
Freeman R R
Holder A A
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