PATHOGENIC BACTERIA, RICKETTSIAS AND VIRUSES AS SHOWN BY THE ELECTRON MICROSCOPE

Abstract
Current textbooks, teaching and discussion in bacteriology do not reflect adequate understanding of the structure of the bacterial cell or of the smaller parasitic entities known as rickettsias and viruses. It is a well recognized principle in natural science that understanding of structure is basic to analysis of function. In most areas of the medical sciences this principle is not only accepted as a matter of course but, more important, is expressed in the actual content of these sciences. However, several special circumstances have tended to foster the development of bacteriology without an adequate basis of understanding even of the structure of bacteria. Bacteriology has been pursued primarily for its practical usefulness, only secondarily as a science in its own right; structural details of the bacterial cell are close to, and in many cases beyond, and the structural details of rickettsias and viruses are completely beyond, the limits of resolution

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