What are the sources of DNA?

DNA (Deoxyribonucleic acid) can be obtained from various sources in biological organisms. Here are some common sources of DNA:

1. Human Cells: DNA extraction is commonly performed from human cells, such as blood cells, buccal cells (cells from the inside of the cheek), hair follicles (containing root cells), and skin cells. These samples can be collected through non-invasive methods and provide valuable genetic information.

2. Body Fluids: DNA can be extracted from various body fluids, including saliva, semen, vaginal secretions, urine, and tears. These fluids may contain cells or _____ ___ ___ ___ ____.
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