Hinduism, Kriya Yoga
(1) Sri Yukteswar used the word prana; I have translated it as lifetrons. The Hindu scriptures refer not only to the anu, "atom," and to the paramanu, "beyond the atom," finer electronic energies; but also to prana, "creative lifetronic force." Atoms and electrons are blind forces; prana is inherently intelligent. The pranic lifetrons in the spermatozoa and ova, for instance, guide the embryonic development according to a karmic design.