Monday, November 26, 2007

Cost To Remove Cyst From Dog's Paw

Welch, William Henry (1850–1934)

born in 1850 in Norwolk (Connecticut) in a family which already had several doctors.
At sixteen he entered Yale University and also studied at the College of Physicians and Surgeons.
When he graduated, he accepted a post at the Norwich Academy in New York, in 1870.
was in 1875 when he received the title of Medical Doctor.
traveled to Europe to familiarize themselves with the emerging field of bacteriology where he studied, among others, Robert Koch.
In 1893 he was appointed first dean of the School of Medicine, where he did basic research but also clinical research. Conducted numerous autopsies, including a 38 year old man, who had become infectious with a mass in the infraclavicular and mammary region, which evolved into a fatally gas gangrene. During the autopsy, the opening of the wall of a vein produced a minor explosion at a small flame, so it appeared that was full of gas. Microscopically observed the presence of large numbers of bacilli of 3-5 mm in length, with slightly rounded edges and capped. This finding was presented
at a meeting of John Hopkins Hospital Medical Society in 1891. FH George Nutall the bacterium called Bacillus aerogenes capsulatus (Welch bacillus), now known as Clostridium perfingens .
This discovery was a major step to combat serious complications in the evolution of the wounds, gas gangrene and intestinal infections.
He retired with 80 years in 1930, and died in 1934 of a gastrointestinal carcinoma. Author
work: Roda Pérez, Lourdes.

Sunday, November 25, 2007

Knitted Pappose Pattern

Margulis, Lynn (1938 – actualidad)

born in 1938 in the city of Boston. He began his secondary education at a public high school, but moved by their parents to the elite School Laboratory of the University of Chicago. Later, on his own, returned to school with his old friends, the place she thought she belonged.
At age 16 are accepted into the program developed at the University of Chicago where he majored in biology 4 years later, becoming, according to her, a title, a husband and a critical skepticism.
In 1958, he continued his training at the University of Wisconsin and a master's student and assistant professor. Studying cell biology and genetics (genetic general and population genetics.) In one of his teachers say, "It changed my life. When I left the University of Chicago knew I wanted to study genetics, but after classes Crow knew I only wanted to study genetics.
Since initially attracted to the world of bacteria, which at that time, she indicated that they were considered only in terms of pathogenic germs and uninteresting character in the field of evolution. Margulis investigated ignored and forgotten works to support his first intuition about the importance of the microbial world in evolution. Based on these and other studies, in which raised the hypothesis that non-nucleated parts (mitochondria and chloroplasts) of eukaryotic cells evolved from other forms were free-living bacteria, focused on developing the hypothesis that led to formulate his theory of serial endosymbiosis , and later his vision of the role of symbiogenesis in evolution.
endosymbiotic theory proposes that eukaryotic cells originated from a primitive cell, which at one time or other cells encompass prokaryotic organisms, establishing a relationship between endosymbiosis. Prokaryotic cells would be the precursor of peroxisomes (ability to remove toxic substances), the mitochondria (from aerobic bacteria) and chloroplasts (ancient photosynthetic bacteria). Later describe step by step and with specificity the origin of eukaryotic cells with KV Schwartz classify life on earth into five kingdoms grouped into two levels: bacteria and eukaryotes.
currently working on the possible origin of cilia and the spirochetes.
work Author: Moreno Llopis, María.