Is the Peritoneal Fluid of Late Strangulation Obstruction Toxic? Conclusion: The peritoneal fluid plays a major role in the lethal issue of strangulation obstruction. What Component of the Fluid Is Responsible for Its Toxic Properties? Conclusion: Bacterial cells appear to be responsible for the toxic properties of strangulation fluid. After Peritoneal Exposure to Toxic Fluid Do Bacterial Cells Gain Access to the Blood Stream? Conclusion: Bacterial cells may be cultured from the portal or systemic blood after peritoneal exposure to fluid. Will Antibiotics Prevent the Formation of Toxic Fluid? Conclusion: Antibiotics prevent the formation of toxic strangulation fluid. Is It Possible to Immunize an Animal Against an Otherwise Lethal Dose of Strangulation Fluid? Conclusion: Previous injections of toxic animal and human strangulation fluid gave significant protection. Fluid arising from a neomycin-treated segment of bowel was not effective. What Is the Effect of Toxic Strangulation Fluid upon Circulating White Blood Cells?