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Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Did you know?
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
Did you know?
Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
![Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source:](https://biology-forums.com/gallery/47/medium_46687_08_12_14_4_59_34_19526512.jpeg)
![Intramuscular drug administration: (c) the needle is inserted at a 90° angle: Source: Pearson Educat](https://biology-forums.com/gallery/47/medium_46687_08_12_14_5_05_08_195362384.jpeg)