|
|
Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Did you know?
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Did you know?
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
Did you know?
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
![Achondroplasia. The individual in this photograph has the reduced limb development that typifies thi](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_28_46_100721443.jpeg)
![Although average brain size increases gradually though time in H. erectus, individuals with small br](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_53_207641723.jpeg)