The development of the thymus was examined in different stages of Harpagifer sp. from Signy Island (South Orkney Islands; 60°43′S, 45°38′W). The thymus was typical, both in position and structural development, of that observed in warmer-water teleosts. The infiltration of the thymic epithelia was not observed until 4 weeks post-hatch. Full development of the lymphoid organs was not achieved until the juvenile stage. Although an increased infiltration of the thymus, by sub-epithelial connective tissues and epithelial mucous cells, occurred in the juvenile and adult stages, there was no evidence of an advanced stage of thymic regression or involution in the adult Harpagifer. Thus a suppressive influence of the low temperature environment, on the onset and degree of thymic development and involution, was indicated in this species.
New York State officials say if you receive a positive COVID test you must continue to self-isolate. Those who have been in close contact with someone who has tested positive for the virus must self-quarantine also. You must register online in order to be tested, or call 211. This week, the testing site was located at the Broome County Health Department. BROOME COUNTY (WBNG) — The Broome County Rapid COVID-19 testing site is moving once again to a new location next week. Officials say the site is only to be used by those who are experiencing COVID-19 symptoms. If you do not have symptoms of the virus, you can still sign up for a coronavirus test at the Binghamton University state testing site, or at UHS or Lourdes. The site will move on Monday, Dec. 7, to the Vestal Public Library, located at 320 Vestal Prakway E. Officials say the site has open appointments for the upcoming week from 1 p.m. to 7 p.m. Monday through Friday.