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During this period, TMV made the progression from a mysterious agent-of-disease to a reagent that is used to dissect the molecular mysteries of plant-pathogen interactions

doi:10.1126/science.3547653

This included being able to identify and characterize pure cultures of microbes in the laboratory and to reproduce the disease from pure culture, i.e., Kochs postulates

Yet Tobacco mosaic virus has been an extraordinary tool in the past century, for research ranging from structural biology to host-plant resistance

Just remember that (if it does exist) mosaic virus appears to be relatively rare in marijuana plants

Each stage of quitting smoking, from preparing to quit to maintaining a smoke-free status, can present unique challenges