characterized by, produced by, or involving chemical processes in living organisms
In view of this biochemical diversity, the possibilities of interspecies hybridization in this genus are very interesting and worthy of attention.1985, John F. Peberdy, Lajos Ferenczy, Fungal Protoplasts, CRC Press, page 259:
A chemical substance derived from a biological source.
Dr. Gwaltney sent nasal secretions from 40 volunteers with colds to Dr. Proud and Dr. Naclerio, who tested the secretions for the presence of these biochemicals.1987 October 6, Gina Kolata, “Clever Strategy Shows Promise Against Colds”, in The New York Times: