The Story of Cholera Cholera is caused by Vibrio cholerae, a Gram negative, curved rod-shaped bacterium. For more information about its taxonomy and structure, go to the National Institutes of Health or the World Health Organization. Cholera caused discord when an outbreak in Haiti after the 2010 earthquake killed more than 8,000 citizens. The country had not dealt with a cholera epidemic in a century, according to a Foreign Affairs article about the situation, "Peace and Pestilence," which also described the outrage that spread when investigators discovered the origins of the pathogen in Haiti. Nepalese peacekeepers from the United Nations had been disposing of human waste improperly--sending cholera into a tributary feeding the largest river in the nation.
Biracial Twins Born in Illinois Twins in Quincy, Illinois are garnering attention and not just because they are super adorable. Nine-month-old Kalani inherited her mother Whitney Meyer’s lighter complexion, while twin sister Jarani got her darker complexion from her father, Tomas Dean. Meyer is Caucasion, while Dean is African-American. “We’re chromosome twins. Kalani is light with blue eyes and Jarani is the darker one with brown eyes,” Meyer recently wrote on Facebook, along with a photo of the fraternal twins, who were born in April 2016. How a few scientists transformed the way we think about disease - Tien Nguyen Dr. John Snow is considered as one of the fathers of epidemiology. He became interested in the cause of cholera after treating many patients afflicted with the disease. More details about his life and work can be foundhere. Dr. Robert Koch’s work in germ theory actually began with the study of Anthrax and led to the development of experiments that would link a bacterium to a disease.
Genetics by the Numbers - Inside Life Science Series - National Institute of General Medical Sciences View All Articles | Inside Life Science Home Page By Chelsea Toledo and Kirstie Saltsman Posted June 11, 2012 Scholars have been studying modern genetics since the mid-19th century, but even today they continue to make surprising discoveries about genes and inheritance. Here are some stats they've learned so far: 3.2 billion The marbled lungfish's genome is larger than any other known species.
Crack the Code - How to Crack the Code DNA - the Blueprint of Life Every living organism contains within itself the information it needs to build a new organism. This information, you could think of it as a blueprint of life, is stored in the organism's genome. The genome is made up of a material called DNA, which stands for deoxyribonucleic acid. If you take a really, really close look at the DNA molecule you will see that it looks like an ordinary ladder, although somewhat twisted.
This TED Talk Shows How Mucus Is There To Keep Us Healthy When you say mucus, most people automatically think of the stuff that comes out of a person’s nose when they're sick. That is true, however — as disgusting as mucus may seem — it is actually keeping us healthy. In a recent TED Talk, speaker Katharina Ribbeck explains the various ways our mucus is actually looking out for us. Replication/Transcription/Translation Replication is the process in which a cell makes an exact copy of its own DNA (copy DNA -> DNA). Replication occurs in the S-fase in preparation to cell division during which the genetic information for the synthesis of proteins is transfered from the mothercell to the daughtercell. Whether this cell division will eventually be a mitosis or a meiosis (more on differences), in either case during replication the entire DNA is copied in which the genetical code is encrypted as a sequence of nitrogenous bases. The protein synthesis occurs by means of transcrition (in the nucleus: production of RNA with nitrogenous bases that are complementary to one of the DNA strands; thus DNA -> RNA) and translation (in polyribosomes and the rough endoplasmatic reticulum both located in the cytoplasm: RNA codes -> specific chains of aminoacids, i.e. polypeptide, the precursors of proteins).
Differences between Eczema, Psoriasis, Couperose and Rosacea - Mario Badescu Skin Care Which skin condition do you have? Do you have areas of red skin, perhaps some dry, itchy skin or even blisters or rash? There are several skin conditions—Eczema and Psoriasis as well as Rosacea and Couperose—which share a number of characteristics and which are, in some cases, indistinguishable from each other. The two most closely related skin conditions are Psoriasis and Eczema. Let’s start by looking at the differences between Eczema and Psoriasis.