T and B cells. Lymphocytes originate from stem cells in the bone marrow; these stem cells divide continuously, releasing immature lymphocytes into the bloodstream. Some of these cells travel to the thymus, where they multiply and differentiate into T lymphocytes, or T cells.
Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low permeability to air, oils, greases, bacteria and water makes it useful for food packaging. Cellophane is in many countries a registered trade mark of Innovia Films Ltd based in Wigton, Cumbria, United Kingdom.
paraffin - a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) alkane, alkane series, methane series, paraffin series. aliphatic compound - organic compound that is an alkane or alkene or alkyne or their derivative. butane - occurs in natural gas; used in the manufacture of rubber and fuels.