In simple words, NA seq should be present especially in the infected region. But one can also detect in uninfected region as well... in simple words when we perform widal test for ...
Here are Koch’s postulates for the 21st century as suggested by Fredricks and Relman:
1.A nucleic acid sequence belonging to a putative pathogen should be present in most cases of...
Robert Koch's postulates, published in 1890, are a set of criteria that establish whether a particular organism is the cause of a particular disease. Today, Koch's postulates are t...