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.
Symptoms of CSF Rhinorrhea. Rhinorrhea (runny nose) that is clear and watery may be the first sign of cerebrospinal fluid rhinorrhea. Other signs and symptoms may include: headache. nasal drainage with a salty or metallic taste. drainage increases while leaning forward with head down. lack of smell (anosmia) nasal congestion.