An increased level of immune complexes remains in blood serum for 30 d
ays after complete surgical operation of AH22a in Af strain of mice. B
eginning from the 8(th) day after tumor operation a complex of free tu
moral antigens, specific for tumor, disappears antitumoral antibodies
emerge and antitumoral resistance that is more expressed on 8-30(th) d
ays following tumor operation, develops, In 25-30% of mice AH22a reino
culated in this period regresses completely.