Interviews and participant observation were conducted at a US infertil
ity clinic with women who were attempting to become pregnant with eggs
donated by their biological sisters. Sisters who donated eggs were al
so followed and interviewed regarding their experiences, as were a num
ber of husbands of recipients. Five significant social processes chara
cterising the sisters' passage through egg donation are discussed: (1)
negotiating dissimilar treatment experiences, (2) communicating cauti
ously, (3) interacting in a triad, (4) disclosing to others, and (5) '
gift-giving'. Although participants are generally satisfied with their
decision to do sister-to-sister egg donation, the unprecedented proce
dure presents a number of difficulties. If sister-to-sister egg donati
on as a means to biological motherhood continues in the future, these
sociological findings suggest areas in which medical personnel may nee
d to provide social and emotional support.