Are humans Commensals?

The proper way of saying "Human to Human" is Human to Human. EX. Can a worm pass from Human to Human? No.

Probably more prokaryote cells on or in humans than their own eukaryote cells.

bones,the skeletal structure formed underneath our skin and muscles made up of several compounds calcium, and marrow, ivory,Vitamins and nutrients found in many living species also..

Opinion. Perhaps this question assumes an unfair generalisation. It is part of the basic human character to be concerned about our fellow human beings. Stories regularly appear in the press about...

yes