Or maybe one policy will cover a pre-existing condition, but not another.
This observation led him to further work, and he succeeded in showing that in vascular organs the presence of cells in inflammatory exudates is not the result of exudation but of multiplication of pre-existing cells.
The souls which remember their pre-existing state can attain to this contemplation of unity, and thereby rise superior to all the ordinary doctrines of religion or life.
B, single nucleus due to th~ fusion of the two pre-existing nuclei.
Thus the postcaval vein of the higher vertebrata is partly a new structure altogether, and is partly formed out of the pre-existing posterior cardinals.