In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Q: iPS cells closely resemble embryonic stem cells , the " in vitro " equivalent of the part of the blastocyst ( the embryo a few days after fertilization ) which grows to become the embryo proper .

A: iPS cells are like embryonic stem cells from a blastocyst ( the embryo a few days after fertilization ) .
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Q: A software bug is an error , flaw , failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result , or to behave in unintended ways .

A: A software bug is a problem with the code in a computer program which makes it not work properly .
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Q: Erectile dysfunction ( also known as ED or " ( male ) impotence " ) is a sexual dysfunction characterized by the inability to develop and / or maintain an erection .

A:
Erectile dysfunction is also known as ED , impotence or male impotence .
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