In the Americas, Indigenous peoples used a wide variety of snake, frog, and plant poisons on projectiles for hunting and warfare (Jones, 2007). Complex recipes for envenomed arrows similar to those devised in the Americas are recorded in Greek and Latin texts. One of the most dreaded arrow ...
Our results showed that air contributed to the majority of bacterial isolates. Sterility testing revealed the presence of bacterial contamination in all the intermediate steps, as only the final preparation after filtration was sterile. Endotoxin was present in all tested samples and the final product...
thanks to an air pump connected via flexible tubing. These bubbles help oxygenate the water as they pop on the surface,improving the living conditionsfor the fish, plant life, and other creatures in the tank.