angiotensin ii: a potent vasopressor agent formed from angiotensin I
angiotensin: any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels
julian calendar: the solar calendar introduced in Rome in 46 b.c. by Julius Caesar and slightly modified by Augustus, establishing the 12-month year of 365 days with each 4th year having 366 days and the months having 31 or 30 days except for February