[Quantitative cytochemical study of local immunostimulation of the respiratory mucosae by mineral spa water (author's transl)].

After non-specific stimulation (by mineral spa water) of the secretion of IgA by the respiratory tract of rabbits, the animals were killed and a study made of the number of plasmocytes per 500 diameter field by phase contrast microscopy. The number of plasmocytes was markedly increased on the 15th day and remained 5 times higher than in control animals on the 100th day. Immunocytochemical labelling by the secretory anti-IgA Fab fraction confirmed these data electron microscopically.