> Your form does not exist.
I will willingly bow to your superior knowledge of what I take to be Greek but, rightly or wrongly, "allogeneic" has been used in transplant medicine for a long time. I will grant "variants" ;-)
> Are you thinking of beards? Actually, I was thinking of stem cell transplantation.
variants: or less commonly allogenic \ ˌa-lō-ˈje-nik \
Definition of allogeneic
usually allogeneic : involving, derived from, or being individuals of the same species that are sufficiently unlike genetically to interact antigenically
allogeneic stem cells
allogeneic marrow transplantation
— compare SYNGENEIC
allogenic : caused by the action or influence of abiotic environmental factors
… allogenic (disturbance) processes, such as flooding and sediment deposition patterns, in addition to wind events.
"History and Etymology for allogeneic alteration of allogenic, from ALLO- + -GENIC
NOTE: The word allogenic as a term in genetics was introduced by the British immunologist Peter A. Gorer (1907-61) in the article "Transplantese," Annals of the New York Academy of Science, vol. 87, no. 1 (May, 1960), pp. 604-606. In a subsequent article (P. A. Gorer, et al., "Proposed revisions of 'Transplantese'," Nature, vol. 189, no. 4769 (March 25, 1961), pp. 1024-25), the suggestion is made that allogenic be changed to allogeneic to avoid confusion with ALLERGENIC.