Organ pipes are generally made out of either metal or wood. Very rarely, glass, porcelain, plastic, paper, Papier-mÃ¢chÃ©, or even stone pipes may be seen. A historical organ in the Philippines has pipes made exclusively of bamboo. Metal pipes are usually made of lead; for increased rigidity it is alloyed with tin along with trace amounts of antimony and copper.
Lyme Disease IgM antibodies usually appear 1-2 weeks after an initial exposure and return to normal after about 6 to 8 weeks. IgG antibodies are detectable in most people 4-6 weeks after exposure but may be detectable sooner in some people. IgG antibodies may persist indefinitely.
Viral capsid antigen (VCA) Anti-VCA IgM appears early in EBV infection and usually disappears within 4 to 6 weeks. Anti-VCA IgG appears in the acute phase of EBV infection, peaks at 2 to 4 weeks after onset, declines slightly then persists for the rest of a personâs life. Early antigen (EA) Anti-EA IgG appears in the acute phase of illness and generally falls to undetectable levels after 3 to 6 months.