Complex sentence: Ken and Deirdre both volunteered to donate a kidney for a transplant, but could not do so because their tissue types were not a match for Tracy's.Samir Rachid, Her stepfather, was also tested and was surprisingly a perfect match.
Split into simpler sentences: Ken and Deirdre both volunteered to donate a kidney for a transplant, but could not do so because their tissue types were not a match for Tracy's. Samir, her stepfather, was also tested and was surprisingly a perfect match.