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 Invariant of a binary form In mathematical invariant theory, an invariant of a binary form is a polynomial in the coefficients of a binary form in two variables "x" and "y" that remains invariant under the special linear group acting on the variables "x" and "y". A binary form (of degree "n") is a homogeneous polynomial Σ ()"a""x""y" = "a""x" + ()"a""x""y" + ... + "a""y". The group "SL"(C) acts on these forms by taking "x" to "ax" + "by" and "y" to "cx" + "dy". This induces an action on the space spanned by "a", ..., "a" and on