Intestinal absorption following challenge of immune chicks withEimeria acer vulina

Intestinal changes associated with expression of immunity to challenge with Eimeria vermiformis

“…There is little information on the effect of challenge of immune animals on the architecture of the intestine. Changes in intestinal permeability (17,36,37), absorption (44), and cellular infiltration (33,44) within 24 h of challenge have been described, as has the lack of subsequent pathologic effects such as villous atrophy and malabsorption (44), normally associated with the acute stage of the primary infection.…”

“…In an attempt to obtain further correlations between T-cell function, the expression of immunity, and changes in the intestinal tissues, we have examined responses to challenge with Eimeria verniformis in the intestines of adoptively immunized mice. This approach was adopted in the belief that freedom from the effects of the initial infection, known to persist for some time (44), would allow better observation of those specific to challenge and identification of the responses that correlated with the inhibition of the parasite. Tissues from actively immunized mice were included for comparison.…”