Talk:Transforming growth factor

brain cell?
"TGFα is upregulated in some human cancers. It is produced in macrophages, brain cells"

no such thing, neurons u mean? microgalia?--M siterman 16:19, 27 June 2006 (UTC)

Two classes?
As I understan, there's only one alpha? -- C opper K ettle  12:56, 21 September 2009 (UTC)