the increase in intramammary pressure caused by injecting small amounts of water into the udder artery of anesthetized ewes does not seem to be a nervous reaction induced by the stimulation of sensitive mammary receptors : the deflections remain unchanged after complete denervation of the gland ( fig . 4 ) and after the injection of water at different temperatures ( 4 to 37 degrees c ; fig . 1 ) or ph 's ( 4.6 to 9.8 ; fig . 2 ) .
C0043047
water
C1163679
injection