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The timeline can be navigated by dragging the pointer on the timeline bar, located at the bottom of the screen on the desktop version and on the left of the screen on mobile. To filter by a specific topic, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. To learn more, click “Read More” below.

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Black and white photo of Henrietta Lacks smiling, wearing a white blouse and dark suit jacket. Hands on her hips. Behind her, a brick wall.
Henrietta Lacks (born Loretta Pleasant, 1920-1951) smiling, posing with her hands on her hips.