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Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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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.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

The endocrine system The endocrine system
Procedures for Diagnostic Tests Related to the Musculoskeletal system Procedures for Diagnostic Tests Related to the Musculoskeletal system
Female Reproductive System "الجهاز التناسلي للأنثى" Female Reproductive System "الجهاز التناسلي للأنثى"
Development of the Respiratory System Development of the Respiratory System
MANAGEMENT ACCOUNTING MANAGEMENT ACCOUNTING
The Limbic System The Limbic System
Video: Oogenesis Animation

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