0 a chemical, found for example in tea and coffee, that is a stimulant (= something that makes people more active) --
1 a chemical found in coffee and tea that is a stimulant (= something that tends to make you more active) --
However, slightly increased penetration activity was shown also in spermatozoa incubated with heparin and caffeine (42.3% and 37.3%, respectively).
Synergistic effect of caffeine and heparin on in vitro fertilization of cattle oocytes matured in culture.
They provided the institutional framework for a flourishing culture of caffeine.
Nor did the year 1800 bring with it any lessening of interest in caffeine.
All participants were asked to abstain from caffeine for the day and to ingest only fluids after 1500 hr on the day of the study.
Quantitative liver function in the elderly assessed by galactose elimination capacity, antipyrine demethylation and caffeine clearance.
However, the effects of caffeine during oocyte aging on embryonic development have not yet been studied.
Participants were permitted to use their typical amounts of tobacco and caffeine in order to avoid confounds associated with nicotine or caffeine withdrawal.
