the bacteria streptococcus pneumoniae has a virulent s strain and a nonvirulent r strain. the s strain is lethal to mice. the s strain contains a chemical factor that can transform the r strain to be virulent. the diagram shows a series of experiments conducted by injecting combinations of these strains into mice to identify the transforming factor.

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.

Olfactory epithelium i believe

Psychological disorder. transgender disorder