The Howard Hughes Medical Institute's Ask a Scientist website provides a forum for teachers, students, and others to discuss biology topics with scientists. Participating scientists answer questions to the best of their knowledge. The information they provide is intended for educational purposes only. The Howard Hughes Medical Institute assumes no responsibility for the scientific accuracy of Ask a Scientist responses or for the content of references and Web links that may be provided in responses.
Immunology and infectious diseases
Summary by 张怡 on 2003-07-04
Last updated by 李晓霞 on 2003-07-08