In the papers of Gerlits-Nagy [4] and McCoy [6] a study is made of properties of a space X which imply or are equivalent to other properties of the space C(X) (i.e. space of continuous real-valued… (More)

The murine B7 (mB7) protein is a potent costimulatory molecule for the T-cell receptor (TCR)-mediated activation of murine CD4+ T cells. We have previously shown that stable mB7-transfected Chinese… (More)

If X is a topological space with density d(X),2, then cf (d((X')(A )),cf A, where (X") (A is the A-box product of K copies of X. We use this observation to get lower bounds for the function 5(K, A)=… (More)

Activation of T lymphocytes requires the recognition of peptide-major histocompatibility complex complexes and costimulatory signals provided by antigen-presenting cells (APCs). The… (More)

We introduce a natural generalization of Borel’s Conjecture. For each infinite cardinal number κ, let BCκ denote this generalization. Then BCא0 is equivalent to the classical Borel conjecture.… (More)