Normally, levels of AST in the blood are low. Very high levels of AST (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection. With acute hepatitis, AST levels usually stay high for about 1-2 months but can take as long as 3-6 months to return to normal.
A Baltimore mechanic named Charles Moncky invented the monkey wrench around 1858. The tool was originally named by using a âpurposeful misspellingâ of its inventorâs name, according to the Ferris State University Jim Crow Museum.
Among her other achievements, she invented an incubator made of bamboo that could be used in rural areas without electric power. (The egg incubator was invented by Lyman Byce and Isaac Dias, in Petaluma, California. The patent was granted on June 2, 1885.)