Redundant words

Avoid unecessary repetition of words or word meanings and tautology.

avoid better
consensus of opinion consensus
fewer in number fewer
exact duplicate duplicate
estimated at about estimated
sum total sum
whether or not whether
in order to to
elongated in shape elongated
both of them both
excised out excised


“levels of adenosine concentration increased…”

is better as:

“adenosine levels increased…”