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.
Micrograph showing condensed chromosomes in blue, kinetochores in pink, and microtubules in green during metaphase of mitosis. In cell biology, the spindle apparatus refers to the cytoskeletal structure of eukaryotic cells that forms during cell division to separate sister chromatids between daughter cells.