Phosphotyrosine article 10 priority journal 10 Humans 8 Phosphorylation 8 controlled study 8 human 8 protein phosphorylation 8 Male 6 Sperm Capacitation 6 Spermatozoa 6 human cell 6 spermatozoon capacitation 6 Acrosome Reaction 4 Signal Transduction 4 Sperm Motility 4 acrosome reaction 4 cell membrane 4 cyclic AMP 4 male 4 metabolism 4 mitogen activated protein kinase 4 phosphotyrosine 4 polarization 4 protein binding 4 protein tyrosine kinase 4 semen analysis 4 signal transduction 4 spermatozoon motility 4 tyrosine 4