Kudoa barracudai n. sp. has been found infecting the muscles of Sphyraena putnamae from Red Sea, Saudi Arabia. The prevalence of the infection was 10 % (5/50). Its ovoidal plasmodia encapsulated with fibrous connective tissue and measuring 700 x 510 mu m. Local myolysis was observed around the plasmodia without inflammatory reaction. Mature spores were quadrate in the apical view with rounded edges and subspherical to ovoid in the side view and measured 5 mu m (4.5-5.5) in width and 5.5 mu m (5-6) in thickness.

It has been known that Arak, Salvadora persica, has a number of medicinal properties. We tried to investigate in vitro scolicidal effect of root extracts of this plant against protoscolices from hydatid cysts of Echinococcus granulosus. Protoscolices were aseptically collected from sheep livers containing hydatid cysts. S. persica root extract was used in 10, 30, and 50 mg/ml concentration for 10, 20, and 30 min. The viability of protoscolices was ascertained by 0.1% eosin staining. Scolicidal activity of S.

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A series of three cyanide-bridged chain coordination compounds with the formulae [M(CN)2(PPh3)2Ag]n (M is Ag,
Cu or Au) is presented. The compounds have been prepared by roomtemperature reactions of triphenylphosphane
with the cyanide salts of silver(I), copper(I) and gold(I). The compounds are characterised with IR, elemental analyses,
SEM-EDX and X-ray powder diffraction, and the molecular structures were elucidated by single crystal X-ray

Killer Cell Immunoglobulin-like Receptors (KIR) have been used as good markers for the study of genetic predisposition in many diseases and in human genetic population dynamics. In this context, we have investigated the genetic diversity of KIR genes and their main HLA class I ligands in Saudi population and compared the data with other studies of neighboring populations. One hundred and fourteen randomly selected healthy Saudi subjects were genotyped for the presence or absence of 16 KIR genes and their HLA-C1, -C2, -Bw4(Thr80) and Bw4(Ile80) groups, using a PCR-SSP technique.

A new coelozoic Myxozoan species, Ceratomyxa tunisiensis n. sp., was found infecting the gallbladders of two carangid fish, Caranx rhonchus and Trachurus trachurus (Perciforme, Carangidae), from the Gulf of Gabes, on the southern coast of Tunisia. The parasite develops in spherical mono-, diplo-, or polysporic tropozoites in the gallbladder of the hosts. Mature spores are typical of the genus Ceratomyxa. They are transversely elongated and narrowly crescent-shaped with a slightly convex anterior and concave posterior, and measure 23 +/- 0.

Aims: We performed an association study to evaluate the contribution of 16 killer cell immunoglobulin-like receptor (KIR) genotype polymorphisms and the HLA-C1 and -C2 ligands in the development of colorectal cancer (CRC) in Saudi Arabian patients. Methods: A total of 52 patients with different stages of malignant CRC as well as 70 healthy Saudi controls were enrolled at the King Khalid University Hospital. Results: Our results showed that the frequency of the activating mutations KIR2DS1, 2DS2, 2DS3, 2DS5, and 3DS1 was significantly higher in CRC patients compared to controls.

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Two new cyanido-bridged coinage metal compounds are presented. A novel hetero trinuclear Ag–Cu–Au
compound of formula [AgCuAu(CN)3(PPh3)5](H2O)2 1 is described with bridging cyanide ligands between
the metals, and terminal phosphane ligands for Cu(I) and Ag(I). Silver is tetrahedrally coordinated by 3
phosphane ligands and a bridging cyanido ligand, copper is coordinated tetrahedrally by 2 phosphanes,
and 2 bridging cyanide ligands, whereas gold has a linear coordination by 2 cyanido-jC ligands. Under