Fetal bovine serum and virus, endotoxin, haemoglobin, IgG and total protein assays. Ethical questions have been raised regarding the blood collection process due to the potential suffering caused to the fetus. Although anoxia or active slaughter could be used to induce unconsciousness or death prior to serum harvesting, exposure of live unborn calves to oxygen can cause them to gain awareness before being killed, resulting in active debate about the ethics of harvesting serum. Fetal bovine serum is commercially available from many manufacturers, and because cells grown in vitro are highly sensitive, customers usually test specific batches to check for suitability for their
Blood, Sweat and Towers version by the full band, which was previously released as a single in 2005. It is one of only six UK top 50 singles to have the word "fuck" in the title. "Blood, Sweat and Towers" was released on three different dates, depending on location; Blood, Sweat and Towers Blood, Sweat and Towers is the debut album of English punk rock band the Towers of London, released on 5 June 2006. The album features thirteen tracks, four of which have been released in the United Kingdom as singles. The album was heavily influenced by Sex Pistols' "Never Mind the Bollocks"