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.
IgM may be produced by a developing baby (fetus) in response to infection. Due to the size of IgM antibodies, they cannot pass through the placenta from mother to baby during pregnancy. Thus, any IgM antibodies present in a newborn's blood are not from the mother but were produced by the baby. This indicates that an infection began during pregnancy.