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Articoli marcati con tag ‘fecondazione’

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SOMMARIO

  • Gli Animali (o Metazoi) sono  organismi eucarioti, eterotrofii, pluricellulari  e mobili durante almeno uno stadio della loro vita. Si riconoscono circa 1,5 milioni di specie note viventi.
  • Il loro processo evolutivo è in atto da oltre 500 milioni di anni.
  • Sono classificati in base ai differenti piani strutturali corporei che li caratterizzano.

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  • More, bigger wildfires burning western US over last 30 years
    Wildfires across the western United States have been getting bigger and more frequent over the last 30 years. The total area these fires burned increased at a rate of nearly 90,000 acres a year -- an area the size of Las Vegas, according to the study. Individually, the largest wildfires grew at a rate of 350 acres a year, the new research says.
  • Fish consumption advisories for expecting mothers fail to cover all types of contaminants
    Fish consumption advisories for expecting mothers are ineffective in reducing infant exposure to contaminants like persistent organic pollutants. The researchers' model estimates that women who stop eating fish shortly before or during their pregnancy may only lower their child's exposure to POPs by 10 to 15 per cent.
  • First structural insights into how plant immune receptors interact
    The first structural definition of how plant immune receptors interact has broad implications for understanding their function. "Before, we knew that proteins called RRS1 and RPS4 are required to recognize specific molecules from pathogenic bacteria, and then use this recognition as a cue to activate defense. However, we had no idea how they did it […]
  • Connecting sleep deficits among young fruit flies to disruption in mating later in life
    Mom always said you need your sleep, and it turns out, she was right. According to a new study, the lack of sleep in young fruit flies profoundly diminishes their ability to do one thing they do really, really well -- make more flies. To address whether sleep loss in young flies affects development of courtship circuits, the team investigated a group of neur […]
  • Re-emergence of Ebola focuses need for global surveillance strategies
    A review calls for improved global surveillance strategies to combat the emergence of infectious diseases such as the recent outbreak of Ebola in West Africa that has claimed the lives of 122 people in the countries of Guinea and Liberia. The deadly Ebola virus can cause mortality rates up to 90 percent of those individuals who contract the disease. No cure […]
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