(from the article `human disease`) ...present in sufficient number to escape the phagocytes. They must be capable of surviving the inflammatory and immune response. Ultimately, to ...
Degree to which an organism is able to spread through the body from a focus of infection. ... (09 Oct 1997) ... 
(in-va´siv-nis) the ability of a pathogenic microorganism to enter and spread throughout the body. the ability of a malignant tumor to be invasive.
Degree to which an organism is able to spread through the body from a focus of infection.