(Ἰασώ), i. e. Recovery, a daughter of Asclepius or Amphiaraus, and sister of Hygieia, was worshipped as the goddess of recovery; and in the temple of Amphiaraus at Oropus a part of the altar was dedicated to her, in common with Aphrodite, Panaceia, Hygieia, and Athena Paeonia. (Paus. 1.34.2; Aristoph. Pl. 701, with the Schol.; Hesych. s. v.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890