3) McGeer PL, McGeer EG: Aging and neurotransmitter systems. In: Parkinson's disease II, aging and neutoendocrine relationship. (Advances in Experimental Medicine and Biology. Vol. 113). Finch CE, Potter DE, Kenny AD (eds), Plenum Press, NY 1978, 41-57.
4) 田内久: 老化の形態学. 理工学社, 東京, 1980, 144-158.
5) Pisoiotta AV, Westring DW, DePrey C, Walsh B: Mitogenic effect of phytohaemagglutinin at different ages. Nature 215: 193-194, 1967.