A histological method for the biological estimation of vitamin A

Equine Sensory Ataxia (“Wobbles”)

“…c i l . ) i t should be remembered that iii the rat, at least,, nervous system lesions oiily occu~' in experimental vitamin A deficiency when vritical conditioiis are established with respect to age, level of intake and, to some extent, s~x (Coetzee 1949).…”