system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Antisera are prepared from
assistant
The correct answer is  AntiseraIs a material prepared in animalsPassive immunization was achieved by the administration of antisera or antitoxins prepared from horsesAdministration of antisera give rise to serum sickness and anaphylactic shock(Refer: K. Park's Textbook of Preventive and Social Medicine, 24th edition, pg no:112)