The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 15-year-old woman presents with fever, altered mental status and a petechial rash on her lower extremities and back since yesterday evening. She also says she has been nauseous for the past 3 hours and has vomited twice. The patient mentions she has had heavy menstrual bleeding for the past few days. Her blood pressure is 95/80 mm Hg and her temperature is 40.0°C (104.0°F). On physical examination, the patient appears diaphoretic. A pelvic examination reveals a tampon in her vagina. Binding and activation of which of the following T cell receptors is responsible for this patient’s most likely condition?   (A) B7 receptor   (B) Variable β-sequence of the T cell receptor   (C) CD3   (D) IgCAM
['(B) Variable β-sequence of the T cell receptor <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) B7 receptor \n (B) Variable β-sequence of the T cell receptor \n (C) CD3 \n (D) IgCAM <> possible answers', '  A 15-year-old woman presents with fever, altered mental status and a petechial rash on her lower extremities and back since yesterday evening. She also says she has been nauseous for the past 3 hours and has vomited twice. The patient mentions she has had heavy menstrual bleeding for the past few days. Her blood pressure is 95/80 mm Hg and her temperature is 40.0°C (104.0°F). On physical examination, the patient appears diaphoretic. A pelvic examination reveals a tampon in her vagina. Binding and activation of which of the following T cell receptors is responsible for this patient’s most likely condition? <> context@']