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Writing the Introduction Section
Present Perfect Tense Use the present perfect tense for Something that began in the past and has continued to the present Something that has not yet happened Something that happened in the recent past Present perfect tense examples: Although Nkx2.2 plays an essential role in β -cell development, no transcription factor has been identified thus far that selectively controls β -cell formation. Similar studies have not yet been performed in monkeys. Recent reports have demonstrated that ET-743 can interfere with….
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