Sentences with phrase «bacteria in petri dishes»

The central puzzle in treating TB is this: In humans, months of drug treatments are required to kill the bacteria very slowly, yet the same treatments kill bacteria in petri dishes immediately.

Not exact matches

No, Darwin's evolution by natural selection was most certainly not based upon merely seeing some bacteria change in a petri dish, and leaping directly to humans and apes having common ancestors.

If life spreads between planets, inhabited worlds should clump in space like colonies of bacteria on a Petri dish.

Our cover story, «The Ultimate Social Network,» by Jennifer Ackerman, describes the efforts to map our human microbiome — no easy feat when certain critters, such as the gut bacteria that prosper in an oxygen - free environment, are challenging to grow in petri dishes in a laboratory.

PETRI PLATTER A petri dish more than a meter long helped scientists visualize the evolution of antibiotic resistance in E. coli bactPETRI PLATTER A petri dish more than a meter long helped scientists visualize the evolution of antibiotic resistance in E. coli bactpetri dish more than a meter long helped scientists visualize the evolution of antibiotic resistance in E. coli bacteria.

For more than a century, microbiologists have studied bacteria by isolating, growing and observing them in a petri dish.

The paint - by - light images were produced by mixing the bacteria into a gel on a petri dish and placing them in an incubator exposed to projector or laser light.

The bacteria in the dark parts of the Petri dish digested this sugar and so turned black, whereas in the illuminated areas, a light - activated gene prevented the bacteria from eating the sugar, and so these parts remained clear.

Traditional techniques for identifying microbes rely on growing them in Petri dishes, but gut bacteria are particularly tricky to culture.

He spends his days in a laboratory stocked with petri dishes and flasks of bacteria — exactly the place where you would expect him to do that sort of work.

Believing that there was a substance in snot that worked as an antibiotic, he smeared a set of Petri dishes with bacteria and his own special Fleming phlegm, and left the dishes while he took a two - week vacation.

In the caption, Greene explained that the petri dishes are part of an experiment comparing the effects of two samples of breast milk — one from a mom feeding a 15 - month - old, and one from a mom feeding a 3 - year - old — on the bacterium M. luteus.

When antibiotics leave our system, we leave behind a clean petri dish in which bad bacteria can evolve into new forms without resistance from the good ones.

However, acne patients have p.acnes bacteria in their pores all day long; they don't live in a scientist's petri dish.

They learned how to set up an agar plate (agar is a gelatinous substance made from red algae used to grow stuff in a petri dish) and create a colony of bacteria.

For those interested in the contents of the petri dishes, Ward has broken down the different types of bacteria here.

- A large - scale «Bio City Map» that uses mathematical interpretations of the future together with petri dishes of bacteria and «bacteriography» (bacterial photography) to forecast the world population distribution in the next 100 years.

She asked individuals to swab their belly buttons, then wiped the sample on a Petri dish covered in agar, a jelly - like food source for bacteria.

In the words of the artist: «Virgin Birth «N» Turf provides a mad lab where I get to swab the inner - cheek and place under a microscope a petri dish of the contemporary American experience in the shadow of another blisteringly contentious Presidential election, analyzing the gray matter and microorganisms which make us tick as well as the flesh - eating bacteria which plague uIn the words of the artist: «Virgin Birth «N» Turf provides a mad lab where I get to swab the inner - cheek and place under a microscope a petri dish of the contemporary American experience in the shadow of another blisteringly contentious Presidential election, analyzing the gray matter and microorganisms which make us tick as well as the flesh - eating bacteria which plague uin the shadow of another blisteringly contentious Presidential election, analyzing the gray matter and microorganisms which make us tick as well as the flesh - eating bacteria which plague us.

We humans are also different from bacteria in that we have efficient means of transporting and distributing resources also known as markets, we can innovate and find new ways of doing things, and though we are in a petri dish in the sense that yes the world is finite, it is an awfully big petri dish (despite our admittedly large population) and we are not confined to consuming Agar.

For another poster, the students took samples from different surfaces around campus — door handles, elevator buttons, railings, as well as a stapler and three - hole punch in the library — and grew the bacteria from them in petri dishes.

The bacteria that causes syphilis, Treponema pallidum, is difficult to study in the lab, as it can't be grown in a test tube or Petri dish.