Some strains of S marcescens are capable of producing a pigment called prodigiosin, which ranges in color from dark red to pale pink, depending on the age of the colonies.
Vascular Tissue: the xylem and phloem in leaves are confined to vascular bundles or veins. Veins are surrounded by a layer of cells call the bundle sheath. The bundle sheath can be composed of parenchyma, colenchyma, or fibers.
Vascular Tissue. Vascular tissue (blood and lymph). Blood and lymph represent the final form of connective tissue we will study. In the high magnification image, notice that blood consists of erythrocytes (red blood cells), leukocytes (white blood cells), and platelets.Blood is contained in blood vessels (arteries, veins, capillaries).ascular Tissue. Vascular tissue (blood and lymph). Blood and lymph represent the final form of connective tissue we will study. In the high magnification image, notice that blood consists of erythrocytes (red blood cells), leukocytes (white blood cells), and platelets.