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. n. 1. (Botany) tissue of higher plants consisting mainly of xylem and phloem and occurring as a continuous system throughout the plant: it conducts water, mineral salts, and synthesized food substances and provides mechanical support.ambium-a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth. fibrovascular bundle, vascular bundle, vascular strand-a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem.