context stem cells have the potential to generate a renewable source of cells for regenerative medicine due to their ability to self-renew and differentiate to various functional cell types of the adult organism. the extracellular microenvironment plays a pivotal role in controlling stem cell fate responses. therefore, identification of appropriate environmental stimuli that supports cellular p...

Processed antigen reacts selectively with lymphocytes bearing .appropriate surface immunoglobulin molecules resulting in the clonal proliferation of these cells, produc­ing circulating immunoglobulin (humoral immunity) or non-circulating immunoglobulins (cellular immunity).  High levels of circulating immunoglobulins (lgM & lgG) occur in protozoa and helminths infections. Reaginic antibodies a...

Background: Oocyte cryopreservation is of utmost importance in the current repertories of assisted reproductive technology (ART). Despite this, oocyte vitrification is yet a problematic issue with limited successful pregnancies has been arisen after transfer of embryos derived from vitrified-warmed oocytes. In this sense, great attention has been paid to investigate possible mechanisms underlyi...