Although it was already well known for the quality of its Nebbiolo grapes, the widely accepted birthdate of Barbaresco is 1894, when Cantina Sociale di Barbaresco was founded, as before that date Nebbiolo grapes from the Barbaresco area were mostly sold to Barolo producers.
Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood. There are about 1,000,000 nephrons in each human kidney. The most primitive nephrons are found in the kidneys (pronephros) of primitive fish, amphibian larvae, and embryos of more advanced vertebrates.
Compared to a mouse, a human has nearly 100 times more nephrons, the functional units of the kidneys. Humans may owe these abundant nephrons to a gene called SIX1, according to a new article. Embryonic day 15.5 mouse kidney next to a 15.5 week human fetal kidney with SIX2 (cyan) marking the nephron progenitor cells. The collecting duct system is red, and nuclei are in blue. The best laid plans of mice and men are a bit different -- at least when it comes to kidney development. Compared to a mouse, a human has nearly 100 times more nephrons, the functional units of the kidneys. Humans may owe these abundant nephrons to a gene called SIX1, according to a new article.