Chimerism is what happens when cells from one twin are present in the other. For example, white blood cells with Y chromosomes would be found in the female twin.
: of, relating to, or involving conscious mental activities (such as thinking, understanding, learning, and remembering). cognitive development/psychology/impairment. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
DEF is a key component of Selective Catalytic Reduction technology, developed to meet the strict EPA and CEPA diesel emissions standards in place since January 2010. The purity of your DEF product is critical as impurities will cause the fluid not to work properly. This means: