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.
The alveolar epithelium comprises two main cell types: the alveolar type I and alveolar type II cell. The type I cell is a complex branched cell with multiple cytoplasmic plates that are greatly attenuated and relatively devoid of organelles; these plates represent the gas exchange surface in the alveolus. On the other hand, the type II cell acts as the caretaker of the alveolar compartment. It responds to damage of the vulnerable type I cell by dividing and acting as a progenitor cell for both type I and type II cells. In addition, it synthesises, stores and releases pulmonary surfactant into the alveolar hypophase, where it acts to optimise conditions for gas exchange.