1 Femring-Femring is inserted into the vagina and left in place for three months, after which it is removed and replaced with a fresh ring. 2  NuvaRing-NuvaRing is inserted into the vagina and left in place for three weeks, after which it is removed for a 'ring-free' week to allow menstruation to occur.orn continuously for three weeks followed by a week off, each vaginal ring provides one month of birth control. Several vaginal ring products are currently available, including: 1  Estring-a low-dose estradiol-releasing ring, manufactured from silicone elastomer, for the treatment of vaginal atrophy (atrophic vaginitis).
Feta cheese, according to the latest EU regulations, is a variety of cheese that is made in specific areas of Greece and is manufactured using sheep's milk. The cheese may also be considered âfetaâ if it is made of a mixture of sheep and goat's milk, with goat's milk being less than or equal to 30% of the entire mixture. Goat cheese, as the name suggests, is cheese prepared using goat's milk. 1 Properties.
The earliest evidence of cheese-making in the archaeological record dates back to 5,500 BCE, in what is now Kujawy, Poland, where strainers with milk fats molecules have been found. Earliest proposed dates for the origin of cheesemaking range from around 8000 BCE, when sheep were first domesticated.