DefinitionsThe movement of ocean water is one of the twoprincipal sources of discrepancy between dead reckonedand actual positions of vessels. Water in motion is called acurrent; the direction toward which it moves is called set,and its speed is called drift.
Human RBC precursors are obtained by (i) separating glycophorin A(+) (gly A(+)) cells using a magnetic cell sorting (MACS) technique and by (ii) ex vivo expansion of precursors BFU-E (burst forming unit-erythroid) on methylcellulose semi-solid culture media from mononuclear cells of cord blood.
Choletec (BrIDA, MEB, Mebrofenin) is a carrier for the radioactive Tc-99m that makes it go straight to the organ of interest. The Choletec conjugate is not dangerous by itself; only the Tc-99m matters in terms of breastfeeding safety. The radioactive half-life of Tc-99m is fixed at 6 hours and is entirely independent of any influence by Choletec. The International Commission on Radiological Protection (ICRP) and the American Academy of Pediatrics do not specifically mention Choletec in their breastfeeding safety recommendations for Tc-99m.