T cells and B cells differ in the form of the antigen they recognize, and this affects which antigens they can detect. B cells bind to antigen on invaders that are found in circulation outside the cells of the body, while T cells detect only invaders that have somehow entered the cells of the body.
ABS, DWV, Solid or Cell Core sewer pipe. The solid pipe is composed of ABS at 99% while the cell core is composed of a cellular foam between 2 layers of ABS which makes the cell core pipe lighter.
Plastic pipes include polyvinyl chloride (PVC), chlorinated polyvinyl chlorine (CPVC), PEX pipe and PolyPipeÂ®. Copper, stainless steel and galvanized steel are all types of metal plumbing pipe. Not all pipes are as useful or effective as others, and each type is used for a specific purpose in plumbing. PVC pipe is a type of plastic plumbing pipe primarily used to transport high pressured water. It is available in several standard sizes, ranging from Â½ inch (1.3 centimeters) to 4 inches (10.2 centimeters) in diameter. PVC pipe is only made to handle cold water, as hot water will cause the pipe to warp.