Malignant tumors and the host's reactivity.
D000328:Adult; D005260:Female; D005333:Fetus; D005387:Finland; D006801:Humans; D007108:Immune Tolerance; D008297:Male; D008423:Maternal Age; D008875:Middle Aged; D009369:Neoplasms / Q000276:immunology*; D011247:Pregnancy; D012723:Sex; D013223:Statistics as Topic; D014181:Transplantation Immunology; D014427:Twins