Seriously, though, because 21st-century doctors and nurses are so hurried and harried, the informal patient network has become an essential form of health insurance.
Retinaldehydes and retinoic acids are biologically active derivatives from retinol, and 11-cis retinaldehyde is an essential form of vitamin A that is required for normal vision.
He sees Moringa as a kind of anti-superfood — not something to be frittered away as a luxury supplement, like açaí berries sprinkled on oatmeal, but to be used as a staple, an essential form of sustenance.
But for a manager whose job was on the line (he was fired the following season, after the Cubs finished 67-95), using a high-strikeout pitcher who could work deep into the game was an essential form of self-preservation.
Eventually, however, childcare made its way up the city's priority list, establishing itself as an essential form of social infrastructure (after some powers transferred from boroughs and Whitehall).
"He was the last great representative of a tradition in which music was an essential form of life and of self-expression," said Mr. Botstein, who is also the president of Bard College.
He views the physical, corruptible body in all its parts, including the formal components, as irreconcilably other than the purely immaterial soul, such that the latter cannot be an essential form of the former.
What began as post-Katrina transportation to help displaced residents has become an essential form of transit, Heiligman said.
Throughout the war, horses and mules were an essential form of transport, especially by the British in the rough terrain of Italy and the Middle East.
Glycosylation is an essential form of post-translational modification that regulates intracellular and extracellular processes.
