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.
Procore Technologies, Inc., is a privately held PM software development company whose products are designed specifically for the construction industry. It was founded in 2003 by current CEO Craig Courtemanche who has extensive experience both as a builder and as an owner of a technology firm.