histogen. n. 1. (Botany) (formerly) any of three layers in an apical meristem that were thought to give rise to the different parts of the plant: the apical meristem is now regarded as comprising two layers. See corpus, tunica.a Regenerative Medicine company) and is on the Surgical Faculty for the Procedural Dermatology Fellowship at the University of California at Irvine, Dermatology Faculty, Western University/Pacific Hospital, Long Beach, California and Michigan State University, Dermatology Faculty.
People with fluid in the lungs will experience the following signs and symptoms. 1  Fatigue. 2  Breathing difficulties. 3  Weakness. Cough. 4  Grunting. Pale 5  skin. Restlessness.  Excessive sweating.
With that said, many people who are diagnosed with a form of interstitial lung disease experience one or more of the following symptoms: Shortness of breath; Dry, hacking cough; Excessive mucus production; Bluish skin discoloration due to poor circulation or inadequate blood oxygenation (cyanosis) Pneumonia; Joint pain; Unexplained weight loss; General malaise