Key vocabulary words with IPA pronunciation, definitions, example sentences, and interactive quizzes.
Phrases with type tags, bilingual definitions, usage notes, and example sentences.
To stop making an effort; to quit.
To collect money for a particular purpose, especially for charity.
To motivate or push someone to make progress or succeed.
Related to or connected with the utilization of something.
To change the genetic instructions of a cell so that it functions as a different type of cell.
Undifferentiated cells capable of giving rise to indefinitely more cells of the same type, or from which certain other kinds of cells arise by differentiation.
Artificially caused or stimulated in a laboratory environment rather than occurring naturally.
An immune system response where the body attacks a transplanted organ or tissue as if it were a foreign threat.