Cell Theory..
Matthias Scheiden was a German botanist who, along with Theodor Schwann, helped establish the cell theory. Scheiden's contributions include the discovery that plants are composed of cells, laying the foundation for modern cell biology and the cell theory.
to consider something alive (at least what i was taught) the organism has to replicate in the order DNA to RNA to Protein, cells are the smallest units that have this ability. virus have a different cycle typiclly going: modified RNA to DNA to RNA to Protein which is why they arent considered (yet) to being alive
all animals are composed of cells
that all animals were made of cells
All living things are made of one or more cells.
The German biologist Theodor Schwann concluded that all animals are made up of cells, which contributed to the development of the cell theory. He also proposed that cells are the basic unit of structure and function in living organisms.
Theodore Schwann did not conclude all plants are made of cells. He concluded that all animals were made up of cells. However, Matthais Schlieden did conclude that all plants were made of cells. He concluded this in 1838.
Schwann cells and oligodendrocytes
This questions has been answered below in the related discussions, "what are Schwann cells"
Matthias Schleiden was a German botanist who, along with Theodor Schwann, formulated the cell theory. Schleiden proposed that all plants are composed of cells, which laid the foundation for the study of cells as the basic unit of life.
Schwann cells are glia that myelinate the neurons of the Peripheral Nervous System
The Remaining Schwann Cells schwann cells, after injury and disruption to target, the remaining schwann cells undergo a rapid mitotic division until the target tissue is reached and the successful pathway is regenerated under the structural guidance of the schwann cells,