Fig. 1From: The contraceptive efficacy of intravas injection of Vasalgel™ for adult male rhesus monkeysAnimal 2: Abundant collagenous stroma surrounded by pyogranulomatous inflammation (orange arrow), and fibrin (black star). The clear spaces represent areas that contained sutures (asterisk). In the center of the image, is a small globule of basophilic to amphophilic material (black arrow, presumed Vasalgel). H&E, 40xBack to article page