Bone marrow registry's recruitment drive | Trials and errors of alopecia treatment | Prostate cancer screening

Australia's bone marrow donor registry is funding a cheek swab program to recruit more donors, as it awaits government funding.  Also, the latest in alopecia treatment for those who want to reverse hair loss — and the perspective of those who don't.  And prostate cancer screening can be imprecise and invasive. Could delving into the genome help narrow things down?