Micelles. 1  In aqueous solution, molecules having both polar or charged groups and non polar regions (amphiphilic molecules) form aggregates called micelles. In a micelle, polar or ionic heads form an outer shell in contact with water, while non polar tails are sequestered in the interior.
Most infertility can be treated with conventional therapies, such as drug treatment (fertility drugs) to promote ovulation or surgery to repair problems with reproductive organs. 1  For men, the most common cause of infertility in the couple is with the sperm. 2  For women, the most common cause of infertility factor is an ovulation disorder.
Infertility is the inability of a person, animal or plant to reproduce by natural means. It is usually not the natural state of a healthy adult, except notably among certain eusocial species. In humans, infertility is the inability to become pregnant or carry a pregnancy to full term. There are many causes of infertility, including some that medical intervention can treat. Estimates from 1997 suggest that worldwide about five percent of all heterosexual couples have an unresolved problem with in