the dried excrement of fish-eating sea birds, deposited in rocky coastal regions of South America: contains the urates, oxalates, and phosphates of ammonium and calcium; used as a fertilizer.
In prokaryotes there is only one rather simple type of cell division, which produces two identical daughter cells from one progenitor cell. This is asexual cell division, since it involves no sexual union of different individuals.
Multipotent Stem Cells. Stem cells that can produce cells of multiple differentiated cell types, but all within a particular tissue, organ, or physiological system.Example: blood-forming (hematopoietic) stem cells are multipotent cells that can produce all cell types that are normal components of the blood.ultipotent Stem Cells. Stem cells that can produce cells of multiple differentiated cell types, but all within a particular tissue, organ, or physiological system.