Stopwords

Certain words of little intrinsic meaning occur too frequently to be useful in searching text. Information systems call these "stopwords"; you will not be able to search for the following words alone in Biotechnology Abstracts, but they can be included within a phrase:

an

and

are

as

at

by

for

from

in

is

it

not

of

on

or

than

that

the

this

to

was

were

which

with