Oophorectomy is the surgical removal of the ovaries of a female animal. In the case of non-human animals, this is also called spaying. It is a form of sterilization.
The removal of the ovaries together with the Fallopian tubes is called salpingo-oophorectomy. Oophorectomy and salpingo-oophorectomy are not common forms of birth control in humans; more usual is tubal ligation, in which the Fallopian tubes are blocked but the ovaries remain intact.
In humans, oophorectomy is most usually performed together with a hysterectomy - the removal of the uterus. Its use in a hysterectomy when there are no other health problems is somewhat controversial.
In animals, spaying involves an invasive removal of the ovaries, but rarely has major complications; the superstition that it causes weight gain is not based on fact. Spaying is especially important for certain animals that require the ovum to be released at a certain interval (called estrus or "heat"), such as cats and dogs. If the cell is not released during these animal's heat, it can cause severe medical problems that can be averted by spaying or partnering the animal with a male.
Oophorectomy is sometimes referred to as castration, but that term is most often used to mean the removal of a male animal's testicles.
Working class culture is a range of cultures created by or popular among working class people. The cultures can be contrasted with high culture and folk culture and are sometimes equated with popular culture and low culture (the counterpart of high culture).
Working class culture is extremely geographically diverse, leading some to question whether the cultures have anything in common. Many socialists with a class struggle viewpoint see its importance as arising from the proletariat they champion. Some states which claim to be Communist have declared an official working class culture, most notable socialist realism, which aims to glorify the worker. It should be noted that glorification of the worker in abstract is seldom a feature of independent working class cultures. Others socialists such as Lenin believed that there could be no authentic proletarian culture free from capitalism, nor that high culture should not be outside the experience of workers.
Working class cultures developed alongside the working class itself, during the Industrial Revolution. As most of the new proletariat were former peasants, so the cultures took on much of the localised folk culture. This was soon altered by the changed conditions of social relationships and the increased mobility of the workforce, and later by the marketing of mass-produced cultural artefacts such as prints and ornaments and events such as music hall and later cinema.