Purpose of the study A pilot study was initiated in Autumn 2009 to better define which diseases have a HIV prevalence of >0.1 % as HIV testing of populations with a HIV prevalence above this has shown to be cost-effective. The preliminary results are reported here. Methods A detailed questionnaire was completed for persons presenting with 8 different indicator diseases; sexually transmitted dis...

A characteristic type of reticular cell, the dense reticular cell is described and illustrated by electron microscopy in the thy mus and lymph nodes of mice. This cell is identified by its high nuclear and cytoplasmic density and by the presence of many ribosomes in its long, slender processes extending between lym phocytes (or thymocytes). The preservation of these processes requires special f...

Let F be a family of subsets of an n-element set not containing four distinct members such that A∪B ⊆ C∩D. It is proved that the maximum size of F under this condition is equal to the sum of the two largest binomial coefficients of order n. The maximum families are also characterized. A LYM-type inequality for such families is given, too.

induced by PHA, but nucleotide kinase activities remain con stant despite cell proliferation. The uracil-ONA glycosylase was induced 10-fold during lym phocyte stimulation by PHA. Glycosylase stimulation was co ordinate with the induction of DNA synthesis and DNA polym erase activity. Furthermore, treatment with either actinomycin 0 or cycloheximide at maximal stimulation diminished enzyme acti...

We introduce a method of decomposing the family of intervals along a cyclic permutation into chains to determine the size of the largest family of subsets of [n] not containing one or more given posets as a subposet. De Bonis, Katona and Swanepoel determined the size of the largest butterfly-free family. We strengthen this result by showing that, for certain posets containing the butterfly pose...

Let Vn(q) be the n-dimensional vector space over the finite field with q elements and K a selected k-dimensional subspace of Vn(q). Let C[n, k, t] denote the set of all subspaces S’s such that dim(S ∩K) ≥ t. We show that C[n, k, t] has the normalized matching property, which yields that C[n, k, t] has the strong Sperner property and the LYM property.

Meshalkin’s theorem states that a class of ordered p-partitions of an n-set has at most max ( n a1,...,ap ) members if for each k the k parts form an antichain. We give a new proof of this and the corresponding LYM inequality due to Hochberg and Hirsch, which is simpler and more general than previous proofs. It extends to a common generalization of Meshalkin’s theorem and Erdős’s theorem about ...

T-Cell Acute Lym-phoblastic Leukemia In article number 2205854, Jingjing Ye, Min Ji, Chunyan and co-workers observed aberrant adipogenesis in the bone marrow of chemotherapy-treated T-cell acute lymphoblastic leukemia (T-ALL) patients, differentiated-adipocytes attract support residual T-ALL cells. Last, an SREBF1 inhibitor demonstrates superior improvement on therapeutic effect dexamethason by...

A characteristic type of reticular cell, the dense reticular cell is described and illustrated by electron microscopy in the thy mus and lymph nodes of mice. This cell is identified by its high nuclear and cytoplasmic density and by the presence of many ribosomes in its long, slender processes extending between lym phocytes (or thymocytes). The preservation of these processes requires special f...

Meshalkin’s theorem states that a class of ordered p-partitions of an n-set has at most max ( n a1,...,ap ) members if for each k the k parts form an antichain. We give a new proof of this and the corresponding LYM inequality due to Hochberg and Hirsch, which is simpler and more general than previous proofs. It extends to a common generalization of Meshalkin’s theorem and Erdős’s theorem about ...