1. Should gamete donors be tested for spinal muscular atrophy?
Eduardo F. Tizzano, M.D., Ph.D., Ivón Cuscó, B.Sc., Marı́a Jesús Barceló, R.N., Juan Parra, M.D., Ph.D., Montserrat Baiget, Ph.D. 
Fertility and Sterility 
Volume 77, Issue 2, Pages (February 2002)
DOI: /S (01)

2. FIGURE 1
Haplotype analysis using the C212 DNA marker in the family reported. Lane 1, husband; lane 2, mother; lane 3, twin unaffected boy (first pregnancy); lane 4, twin affected girl (first pregnancy); lane 5, affected fetus (second pregnancy); lane 6, semen donor (second pregnancy). Arrowheads indicate the at-risk alleles as follows: a, maternal alleles; b, first-donor alleles; c, second-donor alleles.
Tizzano. SMA genetic screening in gamete donors. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (01) )