Vermin and симбионты - it some of the world of fantasy. When we see these creatures CU, they raise concerns for us and fastidiousness. When we know that worms or invertebrates are able to settle in us, - panic. Actually all is managed and inferior to will of man. Vermin, certainly, operate as invaders of our organism, but also the system of defence at a human body is very difficult and inventive. This book is a guide on to the main "enemies", description of their strengths and weaknesses, histories about possibilities of encroachment and about the methods of defensive. Submerge in the enthralling wild-wild world of our organism, reconcile oneself to or fight!