Akt Signaling. Akt (v-Akt Murine Thymoma Viral Oncogene)/ PKB (Protein Kinase-B) is a Serine/threonine Kinase that is involved in mediating various biological responses, such as inhibition of Apoptosis and stimulation of cell proliferation. Three mammalian isoforms are currently known: Akt1/PKB- Alpha, Akt2/PKB-Beta and Akt3/PKB-Gamma.
Vascular: Relating to blood vessels. For example, the vascular system in the body includes all of the veins and arteries. And, a vascular surgeon is an expert at evaluating and treating problems of the veins and arteries.
Vascular tissue. vascular tissue. (botany) plant tissue that transports nutrients and water throughout a plant; as veins and arteries are to animals. The two kind of vascular tissue are xylem (used mainly for water) and phloem (used more for nutrients).ascular tissue. vascular tissue. (botany) plant tissue that transports nutrients and water throughout a plant; as veins and arteries are to animals. The two kind of vascular tissue are xylem (used mainly for water) and phloem (used more for nutrients).