The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Did you know?
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
Did you know?
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
Selected skeletal muscles (anterior view).
Selected Adjuncts to Anesthesia
Selected Endocrine Disorders and Their Pharmacotherapy
Selected Drugs for Helminth and Protozoan Infections
Selected Topical Corticosteroids for Dermatological and Oral Lesions