natural killer ( nk ) activity and interferon ( ifn ) production of spleen and bone-marrow lymphocytes were investigated in 8 to 10-wk-old c3heb/fej/cne mice , before and after in vitro exposure to the synthetic pentapeptide corresponding to positions 32-36 of the sequence of thymopoietin ( tp-5 ) .
C0040105
thymopoietin
C0080225
tp-5