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.
1 IgM anti-HAV antibodies are found if you have an active or a recent infection. 2  IgM antibodies usually show up in the blood as early as 2 weeks after you become infected with HAV, when symptoms of hepatitis A are present, and last for a few months after symptoms have gone away.egative results of hepatitis virus testing mean that no antibodies against the hepatitis virus were found. Positive results mean that hepatitis A antibodies were found. Results are usually available in 5 to 7 days.