Abstract
WE have observed a marked and consistent seasonal variation in the sensitivity of guinea pig tissue to acetylcholine (ACh). Ilea taken from guinea pigs during the summer months (May to September) were much less sensitive to the stimulant effect of ACh than those removed during the winter (November to February). Dawson, Hemsworth and Stockham1 also noted that the response of the ileum to spasmogens varied widely at different times of the year, but they gave no specific details.
Original language | English |
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Pages (from-to) | 427-428 |
Number of pages | 2 |
Journal | Nature |
Volume | 251 |
Issue number | 5474 |
DOIs | |
State | Published - 1974 |
Externally published | Yes |