|Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide to produce more stem cells or even an organ in a different suitable condition. Stem cells differ from other types of cells as they are unspecialized cells that are capable of changing themselves into almost any type of specialist cells.
A journal is a periodical publication intended to further progress of science, usually by reporting new research. Most journals are highly specialized, although some of the oldest journals publish articles, reviews, editorials, short communications, letters, and scientific papers across a wide range of scientific fields. Journals contain articles that peer reviewed, in an attempt to ensure that articles meet the journal's standards of quality, and scientific validity. Each such journal article becomes part of the permanent scientific record.