How the immune system kills Mycobacterium tuberculosis is still a puzzle. T
he classical picture of killing due to phagocytosis by activated macrophage
s may be only partly correct. Based on recent evidence, we express here the
view that cytotoxic T lymphocytes also make an important contribution and
suggest that DNA vaccines might be a good way to enhance this. (C) 2001 Fed
eration of European Microbiological Societies. Published by Elsevier Scienc
e B.V. All rights reserved.