Analysis of information sources in references of the Wikipedia article "Tibetan Buddhism" in English language version.
The attainment of the rainbow body ('ja' lus) as understood by the Nyingma tradition of Tibetan Buddhism is always connected to the practice of the great perfection [...]. The Nyingma tradition describes a set of nine vehicles, the highest of which is that of the great perfection, considered the swiftest of the tantric methods for attaining supreme realization, identified with buddhahood.
Of all these changes that we are watching Buddhism undergo in the West, the most momentous may be that women are playing an equal role.