широкораспространённое мнение
• Until 1956, it was widely believed [or it was a widespread opinion (or belief)] that such molecules enter cells passively.
Русско-английский научно-технический словарь• Until 1956, it was widely believed [or it was a widespread opinion (or belief)] that such molecules enter cells passively.
Русско-английский научно-технический словарь