The word Pronucley is misspelled against Pronuclei, which is plural of "Pronucleus"
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Word ends with consecutive vowels 'EI' preceded by alphabets 'pronucl' is misspelled as 'EY'
Wrong Spelling:  pronucl-ey 
Correct Spelling:  pronucl-ei 
Check more misspelled words of Pronuclei to spell it correct.