Wetzels, M.

supplier development product activity growth factor factor plasminogen product development activator growth strategy system supply customer product development activities chain effect supply chain management pa system innovation customer development commitment position supplier innovation strategy model commitment expression oocyte ovulation granulosa follicle tier suppliers level study supplier development activity spermatozoa tissue-type plasminogen activator research sertoli granulosa cells supplier involvement concentration inhibitor plasminogen activator sertoli cells tissue sperm supply chain position ovary production subfertility figure involvement journal function reprod regulation angiogenesi panel component business impact fl uid wynstra product development activity manufacturer receptor liker result theca cell types urokinase tissue-type relation degradation surface industry investigator plasminogen activator system approach