Few eggs from the 10-microgram group and only half from the 1-microgram group eventually hatched into larvae.
The Lung Association, the American Medical Association, the American Academy of Pediatrics and the American Heart Association all favor a daily standard of 25 microgram per cubic .
Each was asked to bring a recent painting or drawing into the studio for the five-hour trip; after the 100-microgram dose began to take effect, each was asked to center his .