CA1 region of hippocampus has an important role in learning and memory. Previous reports have shown that androgens like testosterone and its metabolites are present in high concentration in CA1 region of hippocampus. Androgen receptors have also high density in this region. Therefore, it is suggested that neurohormones in CA1 have an important role in learning and memory. It is likely that...

Before the beginning of the European colonialism era, the Persian Gulf was a communication link between Asia, Europe and Africa, through which silk, spices and other needed goods were transported into the Mediterranean. With the discovery of the Cape of Good Hope and the flourishing of the southern African routes, in order to control the trade routes, colonialists entered the arena, and worked ...

Guilan province is located in north of Iran. It plays an important natural, economic and strategic role in Iranian history due to its geographical location between the Caspian Sea and the Alborz Mountain. This particular characteristic of Guilan has made it one of the most important political centers in its history and in the history of its struggles against the central government of Iran. Iran...

based on the historical data, marhashi has been one of the eventful regions of iran during the second and third millennium b. c. it has been also one of the important confederates of ancient elam during the most of its life time. the mesopotamia texts cited to its name beside the name of ancient elam. the goal of this research is to determine the position of marhashi region through study and ex...

Carotid body paraganglioma is a neuroendocrine neoplasm of the mandibular region. Due to its prominent stromal alternations, carotid body paraganglioma is a great emulator of other neoplasms in the head and neck region especially in metastatic tumors and its definite diagnosis is a great challenge. To the best of our knowledge, the most frequently reported variant is sclerosing and paragangliom...

following the collapse of ussr, the usa, as a key player of the middle east region, claimed the leadership of the world unipolar system and, during the last two decades has attempted to restructure the region. to this end, the us has tried to put into practice a plan under the name the new middle east, inorder to maintain its presence and dominance over this strategic region with the aim of sec...