Effective usage of pronouns

代名詞の使用について

◎ Pronouns such as “it” and “this” can be used very effectively to avoid repetition. They should be used to replace nouns, when the noun is repeated in successive phrases or sentences.

Wordy: Under certain concentrations of methotrexate, the DHFR gene and also the DHFR gene’s product are amplified.
Concise: Under certain concentrations of methotrexate, the DHFR gene and its product are amplified.

-> In this example, the possessive pronoun “its” is used instead of the phrase “the DHFR gene’s.”