You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is an impoant tumour marker in the diagnosis of endodermal sinus tumour: March 2011 and explain in detail?
Ans. D: Alpha Feto Protein Endodermal sinus (yolk sac) tumour is thought to originate from a multiple potential embryonal tissue as a result of selective differentiation of yolk sac structures. This explains why the tumour is rich in alpha-fetoprotein and alphal antitrypsin