Barrett's esophagus is a premalignant condition arising in response to chronic reflux esophagitis. Inducible nitric oxide synthase (¡NOS;NOS-2) and cyclooxygenase-2 (COX-2) are mediators of inflammation and regu lators of epithelial cell growth. Expression levels of ¡NOSand COX-2 are high in colorectal adenomas and carcinomas, and COX-2 expression is elevated in gastric cancers. To determine ...

The immunization of rabbits with cells of mouse leukemia L1210 has been studied. The immune process was dissected into its †̃yMand †̃yGcomponents. The main objective was the preparation of antisera with high cytolytic potencies. A single i.v. injection of viable Ll2lO cells produced a classical immune response in rabbits, with -yM antibody activity first detected on Day 4, maximal on Day 6, a...

We show using duality and category theory that the profinite completion  of a bounded distributive lattice expansion A is a homomorphic image of the canonical extension Aσ . Moreover the natural mapping μ : A →  can be extended to a surjection ν : Aσ ! Â.

The effects of the antiestrogen tamoxifen (TAM) on the growth of two hormone-sensitive human tumors have been examined in athymic mice. The endometrial tumor, EnCalOl, was stimulated to grow by TAM either alone or when combined with estradiol. This contrasted with the nonstimulation of the breast tumor, MCF-7, by TAM alone and the antago nist action of TAM on estradiol-stimulated growth of MCF-...

Let X be a nonempty finite set, ∆(X) = { p : X → [0, 1] | Px∈X p(x) = 1}, and let % denote a binary relation on ∆(X). As usual, Â and ∼ denote the asymmetric and symmetric parts of % . In our nomenclature elements of X are outcomes (or consequences or prizes), elements of ∆(X) are lotteries, and % is the preference relation. Axioms: A1 the relation % is complete and transitive. A2 (continuity) ...

back ground and amis: among the patients who go to physicians, especially to gastroentero logists, a great number consists of the onse suffering upper gi diseases, particularly peptic ulcer disease (pud) which,â  in addition to creating much pain and lowering the quality of life causes a great morbidity and â mortality. so it seems necessary to be cured.â according to the lastâ  researchesâ  th...

The catabolism <>l5-fluorouracM ill mi »as measured in isolated perfused rat liver (IPRL) at various times of the day. IPRLs were prepared from rats sacrificed at 3-h intervals and the elimination rate of FUra and FUra catabolites (i.e., rate leaving the II'KI in the effluent perfusate) following infusion of |'I l|l I ni »as analy/.ed for circadian periodicity. Animals were housed under stand...

â â â  â â â â â  abstract: â  up to now, the impact of real exchange rate on the non-oil exports of iran has been mainly on focus. however, the more important aspect of the fluctuations in exchange rate is its degree of volatility which can have profound effect on the non-oil exports. hence, the main objective of this paper is to investigate the linkage between non-oil exports and the real exc...

o-2-Macroglobulin («2M)was demonstrated in normal and mildly dysplastic cervical epithelium using immunohistochemical methods. In contrast, staining for «2Mdiminished gradually with advancing epithelial dysplasia and was totally negative in truly neoplastic lesions. No in vitro synthesis could be detected in cultured ectocervical cells or in a corresponding malignant cell line (HeLa). However...