1.   Arguing with the radio is a fairly harmless form of disputation, unlikely to get you shot.

2.   First, an antibody is used to determine how much of the harmless form of the protein in a tissue.

3.   Most people bet infrequently and informally, as a relatively harmless form of social entertainment.

4.   Most arrive carrying the bug in a harmless latent form.

5.   The companies smuggle genes into the birds using harmless forms of viruses that are engineered so they cannot replicate.

6.   It is anthrax, albeit a harmless form of the bacterium used for inoculating livestock against the disease.