About one-third of the retail trade industries â $7.5 million in average annual receipts. A few, such as grocery stores, department stores, motor vehicle dealers (except new car dealers) and electrical appliance dealers have a higher size standard, ranging from $11 million to $38.5 million in average annual receipts.
spindle fibers. Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
Methods: For a group of cells that rarely complete the cell cycle, we expect a high proportion of cells to be in the resting stage of the cell cycle (G1). However, in a rapidly dividing cell population, we expect a high proportion of cells to be in the stage of mitosis. One way to quantify cell division is by using the mitotic index: For example, the mitotic index can be used to examine cell proliferation in primary root tissue. The number of cells in mitosis were counted for cells from different regions of the primary root tissue. Interpretation: In general, the mitotic index decreases with increasing distance from the root cap junction.