Castration also figured in a number of religious castration cults. Surgical castration in animals is often called neutering. Also known as "total castration" or "nullification", emasculation is the combination of castration and penectomy. Testes may shrink or atrophy during hormone replacement therapy or through chemical castration. Her case made international headlines due to allegations of bondage sex, decapitation, castration, and cannibalism. As above, see neutering for more information on castration of non-human animals. The counterpart of castration anxiety for females is penis envy. Whereas DHT was equally potent as testosterone at preventing prostate cell death after castration. Many biologically male Hijras undergo a ritualized castration called nirva (sex reassignments). Uranus was scarcely regarded as anthropomorphic, aside from the genitalia in the castration myth. Some underwent castration or other Nazi human experimentation aimed at "curing" homosexuality. Sima called his castration "the worst of all punishments". He accepted treatment with female hormones (chemical castration) as an alternative to prison. Freund was conducting research in chemical castration for sex offenders. In the case of chemical castration, ongoing regular injections of anti-androgens are required.