Pleural effusion. A pleural effusion is excess fluid that accumulates in the pleural cavity, the fluid-filled space that surrounds the lungs. This excess can impair breathing by limiting the expansion of the lungs.
There are 1.5 ounces in a shot. There are 64 ounces in a half gallon. So there are 42.6666667 shots in a half gallon or about 42 1/2 shots in a half gallon. You can find this out by going to Google and typing: shots in half gallon or the long way by typing: ounces in shot and ounces in half gallon
If, on the other hand, you can still find a beverage bottler who deals in Imperial units of measurement, there would be 16 half-pint bottles or 8 pint bottles in a gallon, and thus 4 quart bottles or 2 half-gallon bottles in a gallon.