on a chronic/acute basis pharma.

[Mania]

Пожалуйста, помогите перевести:
This study was designed to evaluate the potential toxicity and immunological effects of the drug following once daily oral gavage to male and female rats for a minimum of 45 days i.e., on a chronic basis.
....
This study was designed to evaluate the potential toxicity and immunological effects of
the drug when administered by oral gavage to male and female rats on Days 1, 29, and 57 i.e., on an acute basis.
Спасибо!

[Dimpassy]

многократно/однократно

[Mania]

Спасибо!