And it is not till Cainozoic times that we have the endogenous grasses and palms and angiospermous exogens.
"Creation and Its Records"
B.H. Baden-Powell
They differ from the genuine epilepsy by the absence of the characteristic dementia, of attacks of petit mal, and by the fact that the seizures are never purely endogenous in origin.
"Studies in Forensic Psychiatry"
Bernard Glueck
endogenous toxins are autogenerated.
"How and When to Be Your Own Doctor"
Dr. Isabelle A. Moser with Steve Solomon