Four monoclonal antibodies against carcinoembryonic antigen (CEA) have been selected from 32 hybrids that produce antibodies against this antigen, by the criteria of high affinity for CEA and low cross-reactivity with granulocyte glycoprotein(s). The specificity of tumor localization in vivo of the four MAb, and their F(ab')2 and Fab fragments was compared in nude mice bearing grafts of a seria...

the existence of ra 226 is proved and measured by radiom emanation-method in waters and food products of north , north west and north – east of iran. a total of 126 water, 249 food and 22 air samples have been examined. the concertration of ra 226 in waters found to be 0.01 to 1.104 pci/1 and in food products from 0.01 to pci/gr. ash.the amount found in due ranges from 0.003 to 0.227 pci/m 3.it...

When weanling rats were given 70% casein diet deficient in pyridoxine, they showed marked accumulation of liver lipid consisting mainly of triglyceride (TG) and cholesterol ester (CE). The serum concentrations of phospholipid (PL) and cholesterol (CH) in pyridoxine deficient rats were significantly lower than those in pair-fed controls, but their serum levels of TG and free fatty acid (FFA) wer...

High performance liquid chromatography coupled with continuous radioactivity detection represents an advancement in drug metabolism research. Using radioactive substances labelled in biologically stable positions, all metabolites can be specifically detected by radioactivity measurement. Thus no clean-up of biological fluids is required prior to HPLC. This can prevent artefact formation from un...

Methyl-14C-gentamicins were prepared from incubation of Micromonospora purpurea in the presence of added methyl-'4C-L-methionine, and products with high specific radioactivity were isolated in satisfactory yields. In the previous paper1), we have shown in shake flask fermentation a high and selective incorporation of radioactivity from methyl-14C-L-methionine into gentamicins. Consequently, we ...

This work deals with the measurement of radioactivity concentrations from different cement samples collected South Gondar Zone, Ethiopia. The naturally occurring radioisotopes and radiation health impact indices caused by these nuclides in are indisputable dwellings. Specifically, average for 226 Ra, 232 Th 40 K were estimated as 76.53, 81.67, 407 Bq kg −1 , respectively. It was seen that all m...

Background: The present research has focused on the effect of radioactivity on drinking water from five sites in the region of Zahedan city. Materials and Methods: The measurement of water activity in wells, river and spring has been used as a screening method. The determination of gamma emitters was performed by use the application of gamma spectrometry. Results: The values of Radium concentra...

The main objective of the present study was to assess natural radioactivity level from soils an abandoned potash mine and its surroundings at Holle locality in Hinda district, Republic Congo. Samples were analyzed using HPGe gamma spectrometer. Activity concentration values obtained varied 21.01 ± 6.47 117.3 2.69 Bq/kg with a mean value 46.15 4.69 40 K; that 238 U 17.36 10.74 40.04 8.58 25.14 1...

The delay between synthesis and excretion of sebum in sheep and in man was determined by measurement of the time between intradermal injection of (1"C ]acetate and the appearance of a peak of radioactivity in the skin surface lipids at the injection site. In two sheep, a peak of radioactivity in the total surface lipid occurred 6 days after injection, and this is interpreted as the time require...