<prompt> Which of the following is not a effect of gas formation in putrefaction?Blood-tinged froth from nostrils and mouthBlisters in thighRigidity, adduction and flexion of limbsPostmoem delivery of fetus  <response>: Blood tinged froth exudes from nostrils and mouth i.e. postmoem purge due to presence of gas in abdomen Blisters in thigh are termed as postmoem blisters which are also due to gas formation. Rigidity : abduction and flexion of the limbs occurs due to inflation of the tissue with gases. Anus uterus may prolapse due to gas formation and postmoem delivery of a fetus takes place. 