the major lymphoid tissues in teleost fish are the kidneys, thymus, spleen and mucosa-associatedlymphoid tissue including the skin, gills and intestine. the head of kidney (pronephros) is an importanthaematopoietic organ and has morphological similarities with the bone marrow in higher vertebrates. in thisstudy, during 12 months from august 2002 to july 2003, 120 grass carp (10 fish/month) were...

in this study, we present changes of peroxidase (e. c. 1.11.1. 7) activities in the root of brassica napus var. okapi during rosette stage until ripening of the fruits. peroxidase activity was determined seasonally over an eight month period. results showed that total peroxidase activity in the root was highest in mid june and the lowest activities were observed from time of winter dormancy unt...

range forage of vicia variabilis, astragalus spp., medicago sativa, prangos uloptera and sanguisorba minor was sampled during three phenological stages from the controlled rangeland stations in chaharmahal and bakhtiari province, iran. samples were analyzed for the determination of crude protein (cp%), ether extract (ee), crude fiber (cf), total ash, neutral detergent fiber (ndf), acid detergen...

The major lymphoid tissues in teleost fish are the kidneys, thymus, spleen and mucosa-associatedlymphoid tissue including the skin, gills and intestine. The head of kidney (pronephros) is an importanthaematopoietic organ and has morphological similarities with the bone marrow in higher vertebrates. In thisstudy, during 12 months from August 2002 to July 2003, 120 grass carp (10 fish/month) were...

the purpose of this study was to determine the seasonal changes of vital signs (body temperature, pulse rate and blood pressure) in relation to the working thermal conditions. in this study a total number of 202 permanent workers of bakeries were studied during summer and winter. the results showed the body temperature and pulse rate raised more in summer than in winter in all workers except wh...

Background Effect of seasonal changes in human reproduction has been intensively researched. Some studies acknowledge influences of seasonal variation on natural conception, while others can not confirm them. The aim of this study was to investigate the effect of seasonal changes on different stages of assisted reproductive technology (ART) in Tehran. MaterialsAndMethods This study was carried ...

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