Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Discuss Concepts How would an “antipregnancy vaccine” that stimulates a woman’s immune system to develop anti- bodies against human chorionic gonadotropin (hCG) prevent pregnancy?

Summary Introduction

To review:

The ways, in which an antipregnancy vaccine stimulates a woman’s immune system to develop antibody (Ab) against human chorionic gonadotropin (hCG) to prevent a possible pregnancy.


The process by which possible pregnancy can be prevented is called contraception. Contraception can be done in several ways, such as by using condoms, IUD (intrauterine device), oral pills, or antipregnancy vaccine. Antipregnancy vaccines are responsible in preventing the gonadotropin hormone or the function of FSH (follicle stimulating hormone) or the effect of hCG.


During early pregnancy, hCG hormone is produced in large amounts. It is a protein hormone. This hormone is needed to keep corpus luteum in a stable condition so that it can produce estrogen and progesterone properly. The hCG has an important role in implantation of embryo onto the endometrium.

The hCG hormone comprises of two parts. These are alpha and beta. Alpha part is similar to pituitary hormones named, TSH (thyroid stimulating hormone), FSH, and LH (luteinizing hormone). Beta part of hCG differs from other hormones of the body...

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