The pulmonary development is extremely complex and highly ordered, a process involving several cell types, which are involved in different phases of development, beginning in the embryonic phase until the differentiation and specialization of cells forming specialized organs. The development of respiratory system (larynx, trachea, bronchi and lungs) begins in the fourth week of embryonic development, and remains incomplete until the last weeks of fetal development, becoming mature just before the birth.
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.
Last date updated on July, 2014