[Further study of the role of vitamin A in immunologic reactions (observations in volunteers)].

Studies made on volunteers who received vitamin A for a week have demonstrated that the content of peripheral blood lymphocytes increased, which was followed by a relative and absolute increase in the content of B lymphocytes and a rise in the number of T cells in the peripheral blood. An increase in the complementary activity of the blood serum and an increase in IgA content in it were also recorded. After a month the majority of the parameters under study returned to normal.

[Effect of vitamin A on immunological status of patients with chronic pneumonia].

Effect of vitamin A on some patterns of specific and unspecific immunity was studied in patients with chronic pneumonia. The vitamin was administered into the patients during 7 days at a daily dose of 500,000 IU. Administration of vitamin A was found to stimulate several immunological patterns: content of T- and B lymphocytes in peripheral circulation as well as IgG and IgM blood serum were increased.