A system and method of pre-fetching data in a network includes displaying first data to a user, the first data being upstream of other data in a data flow. More particularly, the methods and kits employ compounds that can detect EphA2, a specific epithelial cell tyrosine kinase that is overexpressed in metastatic tumor cells. The invention also offers a magnetic recording head that includes a substrate having a coefficient of thermal expansion, a read sensor, and at least one shield, positioned adjacent to the read sensor, that has a coefficient of thermal expansion within \xb12\xd710\u22126\xb0 C. 05% by weight, the amount of O groups 1. The defined terms of each of the tab panel elements are combined to form the Boolean expression. The components each comprise three phase conductors composed of a superconducting material based on rare earths, which are arranged insulated from one another and concentrically with respect to one another.