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.
The Stonecore is a dungeon located in Deepholm, introduced in World of Warcraft: Cataclysm. The entrance is at [47, 52] on the west side of the Temple of Earth, 2/3 to the top. Location: Deepholm. West side of the Temple of Earth. Then the hard part, the z-axis.