Download Allies and enemies : how the world depends on bacteria by Anne Maczulak PDF

By Anne Maczulak

Bacteria are invisible, mysterious, lethal, self-sufficient…and completely crucial for all existence, together with yours. No different dwelling issues mix their stylish simplicity with their enormously advanced position: micro organism hold us alive, offer our nutrients, and keep watch over our biosphere. We can’t stay an afternoon with out them, and no chemical, antibiotic, or irradiation has ever effectively eliminated them. They’re our companions, love it or not--even even though a few of them will fortunately kill us.

Allies and Enemies tells the tale of this notable, intimate partnership. Authored through Anne Maczulak, a microbiologist who’s hunted and labored with a unprecedented array of micro organism, this e-book deals a robust new standpoint on Earth’s oldest creatures. You’ll realize how micro organism paintings, how they evolve, their striking contributions and makes use of, the jobs they’ve performed in human heritage, and why you cannot live on with out them. No type of lifestyles is extra very important, and in Maczulak’s fingers, none is extra attention-grabbing.


Outlasted, outnumbered, outsmarted

They’ve been right here 4 billion years--and they even outnumber you in your personal body


How micro organism continue you alive…

…and easy methods to hold them from killing you


“Humans Defeat Germs!”

But now not for long…


The Invisible Universe

The attractive hidden relationships among micro organism and the remainder of nature


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Additional info for Allies and enemies : how the world depends on bacteria

Sample text

Urine and sweat exit the body as sterile fluids. In plants by contrast, bacteria live on but also inside the plant body. The skin holds habitats that vary in moisture, oils, salts, and aeration. The scalp, face, chest and back, limbs, underarms, genitals, and feet make up the skin’s main habitats, and each of these contains smaller, distinct living spaces. The entire skin surface has about one million bacteria on each square centimeter (cm2) distributed unevenly From the Library of Wow! eBook 26 allies and enemies among the habitats; the dry forearms contain about 1,000 bacteria per cm2, and the underarms have many millions per cm2.

Even harmless native flora can turn into opportunists and cause infection because conditions change in the body. Immune systems weakened by chemotherapy, organ transplant, or chronic disease increase the risk of these opportunistic infections: • • • • • • Staphylococcus—Wound infection Propionibacterium—Acne Bacillus—Foodborne illness Streptococcus—Sore throat Corynebacterium—Endocarditis Pseudomonas—Burn infection Anaerobic bacteria do not survive in the presence of oxygen, but they make up a large proportion of skin flora.

One famous misstep occurred in 1865 during a cholera outbreak in Paris. Pasteur believed the pathogen Vibrio cholerae transmitted through the air though it is a waterborne pathogen. The French nonetheless felt relieved to know that Pasteur was hard at work trying to save them from cholera. The Paris epidemic ran its course and disappeared on its own. During a rabies scare in 1885, Pasteur concocted a treatment and gave the untested drug to a nine-year-old boy, Joseph Meister, who had been bitten by a grocer’s dog.

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