Colostrum immune cells (as lymphocytes) and many antibodies such as IgA, IgG, and IgM. These are some of the components of the adaptive immune system. In preterm infants some IgA may be absorbed through the intestinal epithelium and enter the blood stream though there is very little uptake in full term babies. This is due to the early "closure" of the intestinal epithelium to large molecule uptake in humans unlike the case in cattle which continue to uptake immunoglobulin from milk shortly after birth. Other immune components of colostrum include the major components of the innate immune system, such as lactoferrin,
Invariant of a binary form or decimics. "Quantic" is an old name for a form of arbitrary degree. Forms in 1, 2, 3, 4, ... variables are called unary, binary, ternary, quaternary, ... forms. A form "f" is itself a covariant of degree 1 and order "n". The discriminant of a form is an invariant. The resultant of two forms is a simultaneous invariant of them. The Hessian covariant of a form is the determinant of the Hessian matrix It is a covariant of order 2"n"− 4 and degree 2. The catalecticant is an invariant of degree "n"/2+1 of a binary form of even degree