Eastern Red Cedar ----juniperus virginiana. It normally grows 30 or more ft tall with some specimens reaching over 80 ft and 30 ft wide. It can live a very long life with some specimens in Iowa are over 500 years old on rocky high spots.
Phragmoplast and cell plate formation in a plant cell during cytokinesis. Left side: Phragmoplast forms and cell plate starts to assemble in the center of the cell. Towards the right: Phragmoplast enlarges in a donut-shape towards the outside of the cell, leaving behind mature cell plate in the center. The cell plate will transform into the new cell wall once cytokinesis is complete.
Platelets are derived from bone marrow cells called megakaryocytes. Megakaryocytes are huge cells that break into fragments to form platelets. These cell fragments have no nucleus, but do contain structures called granules. The granules house proteins that are necessary for clotting blood and sealing breaks in blood vessels. A single megakaryocyte can produce anywhere from 1000 to 3000 platelets.