gene deletion article 104 nonhuman 78 priority journal 78 controlled study 74 metabolism 60 genetics 54 human 54 Humans 50 female 34 promoter region 34 unclassified drug 32 gene mutation 30 Gene Deletion 28 Mutation 28 Animals 26 Female 26 Sequence Deletion 26 Article 24 Male 24 male 24 physiology 24 adult 22 animal cell 22 phenotype 22 signal transduction 22 Repressor Proteins 20 nucleotide sequence 20 Argentina 18 Mice 18