Gram stains and the acute abdomen.
D000208:Acute Disease; D001064:Appendicitis / Q000150:complications*; D001202:Ascitic Fluid / Q000382:microbiology; D002648:Child; D006801:Humans; D008297:Male; D010538:Peritonitis / Q000175:diagnosis*; D013194:Staining and Labeling; D013290:Streptococcal Infections / Q000150:complications*