You are in free guest mode.
Timed Practice
Revision List
Attempt History
Progress Tracking
Create a free account to unlock these tools
Practice Listening: Highlight Incorrect Words
ID: #30155
Short
Stem Cells
* Click on the words that are different from what you hear
Result:
Correct Transcript:
Stem cells are the body's master cells, the raw material from which we are built. Unlike normal body cells, they can reproduce an indefinite number of times and, when manipulated in the right way, can turn themselves into any type of cell in the body. The most versatile stem cells are those found in the embryo at just a few days old. This ball of a few dozen stem cells eventually goes on to form everything that makes up a person.
In 1998, James Thompson announced that he had isolated human embryonic stem cells in the laboratory. At last, these powerful cells were within the grasp of scientists to experiment with, understand, and develop into fixes for the things that go wrong.
In 1998, James Thompson announced that he had isolated human embryonic stem cells in the laboratory. At last, these powerful cells were within the grasp of scientists to experiment with, understand, and develop into fixes for the things that go wrong.
With a free account:
Retry and compare every attempt.
Saving...