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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
![The absorption of cerebrospinal fluid from the subarachnoid space (blue) into a major sinus. Note ...](https://biology-forums.com/gallery/30/medium_548020_02_06_17_12_10_51_30203561.png)
![The major components of the hippocampus: CA1, CA2, CA3, and CA4 subfields and the dentate gyrus. ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_12_41_59_303531833.png)