Indoor planting of seeds requires sterile growing medium. Grafting would require clean bandaging. Sunlight kills many germs.
Sterile or dry conditions
Not quite sure, but the Maloney dilator is handed down the esophagus by the anesthetist who is not sterile.
skeletal traction is the only one that require the use of sterile supplies
Maloney dilators are inserted into the esophagus by the anesthesia provider because this cannot be done from the sterile field.
what degree burn requires to be submerged in cool water, leave blister intact and cover with dry sterile dressing
because the bacteria or virus has no dirty place to multiply and become worse, and also the bacteria or virus will not infect anyone else in the sterile place
The conditions that allow you to culture tissue are also ideal for the growth of bacteria, which given a chance will devour your tissue culture.
third degree burn
Those that eat foods that are not sterile (or cured with saltpeter) and kept in anaerobic conditions.
The major uses of 'vegetative propagation' are: To produce strains of crops. Humans combine two of the same plants with different properties to produce a plant with both the properties. For example they may take a scion from an apple tree that can survive in the cold and attach it to a root stock of an apple tree that produces sweeter fruit to combine the two.Vegetative propagation also includes "cuttings" which are essentially pieces of plant removed form a parent plant and then rooted to produce a new plant.Tissue culture which is in effect doing the same as producing a plant from a cutting, but only under sterile laboratory conditions - and at a microscopic levelPlants propagated vegetatively are genetically identical to the parent plant
Donning sterile gloves requires specific technique so that the outer glove is not touched by the hand. A large cuff exposing the inner glove is created so that the glove may be grasped
a) if the water is PERFECTLY sterile and the bottle is PERFECTLY closed, the water would stay sterile years and years and years. b) but if the water in the bottle is not 100% sterile or the bottle is not 100% closed (which is more likely) some germs & co migth slowly multiply ... as their number is expected to be relatively low, you can consider the water to be sterile (or at least the number of the little creatures to be nonrelevant) up until the date on the bottle