1. ULTRASOUND IN PREGNANCY WEB BOOK- frames version
-- An embryonal structure upon which the early embryo is located. after approximately 16 weeks menstrual age) To see an image of the Gestational Sac with a Day 48 Embryo, click here. A measurement used to determine embryonal or fetal age.
http://www.drapplebaum.com/pregnancy.html

2. California Fertility Partners : ALos Angeles based medical practice dedicated to the evaluation ...
We have helped create some of this country's first test tube babies. We have dedicated our professional lives to the study and practice of reproductive medicine to provide you the greatest chance for success.
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3. ivf-infertility.com | Infertility, IVF and more
Intratubal Insemination. ivf-infertility.com provides couples experiencing infertility with information about the causes and treatment of infertility including IVF. ivf-infertility.com | Infertility, IVF and more.
http://www.ivf-infertility.com/