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.
The importance of circulating precursors in the repopulation of tissue-resident macrophage and dendritic cell (DC) populations is not fully understood. Furthermore, the nature of the precursor â that is, whether it is a peripheral-blood monocyte or a circulating lineage-committed precursor â is unclear.ome of the donor cells that were recovered from the spleen had acquired a DC-like phenotype (that is, CD11c + MHC class II +) following transfer. Similar to their human counterparts 9,10, both mouse monocyte subsets have been reported to differentiate into DCs in vitro when cultured with GM-CSF and IL-4 ï®REF. 22ï¯ .