1. Relation between the anatomical genital phenotype and cystic fibrosis transmembrane conductance regulator gene mutations in the absence of the vas deferens 
François Robert, M.D., Faı̈za Bey-Omar, M.D., Jacques Rollet, M.D., Jean-François Lapray, M.D., Yves Morel, M.D., Ph.D. 
Fertility and Sterility 
Volume 77, Issue 5, Pages (May 2002)
DOI: /S (02)

2. FIGURE 1
Testicular volume according to CFTR gene status in 44 men with absence of the vas deferens and no renal agenesis. P value is for comparison with the CFTR gene mutation group. The horizontal line represents the mean. n = 88 testis.
Robert. Absence of the vas deferens. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Schematic representation of the roles of CFTR gene mutations and hypothetical factors in the pathogenesis of absence of the vas deferens.
Robert. Absence of the vas deferens. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )