A suppurative change of this nature takes place in all heterologous new formations.
Homologous reactions are arbitrarily valued as 100 per cent, and heterologous reactions are expressed accordingly.
heterologous het·er·ol·o·gous (hět'ə-rŏl'ə-gəs)
Of or relating to cytologic or histological elements not normally occurring in a designated part of the body.
Derived from a different species, as a graft or transplant.
Immunologically related but not identical. Used of certain cells and antiserums.