Esenting the fact that expression is higher in SP-A-/- mice than in WT mice and indicating that in the SP-A-/- mice the synthesis and/or secretion of these proteins is rapidly enhanced by infection.3) Comparison of changes that occur in each strain between 4 and 24 hr after infectionA comparison of the infection-induced response between 4 and 24 hr in WT and SP-A-/- mice, was made by calculating c