Microscopy Primer
Light and Color
Microscope Basics
Special Techniques
Digital Imaging
Confocal Microscopy
Live-Cell Imaging
Photomicrography
Microscopy Museum
Virtual Microscopy
Fluorescence
Web Resources
License Info
Image Use
Custom Photos
Partners
Site Info
Contact Us
Publications
Home

The Galleries:

Photo Gallery
Silicon Zoo
Pharmaceuticals
Chip Shots
Phytochemicals
DNA Gallery
Microscapes
Vitamins
Amino Acids
Birthstones
Religion Collection
Pesticides
BeerShots
Cocktail Collection
Screen Savers
Win Wallpaper
Mac Wallpaper
Movie Gallery

Polarized Light Microscopy Digital Image Gallery

Estrone

Estrone is one of the three major hormones that chiefly influence the female reproductive system. This substance, along with estradiol and estriol, is often referred to as an estrogen.

View a second and third image of Estrone

Within the female body, estrone is primarily produced in the ovaries, but is also exuded in smaller amounts by the adrenal glands. In males, estrone and the other estrogens are generated in minor amounts in the testes. Generally, the estrogen most heavily secreted and most active in the body is estradiol, but this substance is soon converted to estrone when it enters the bloodstream. Estriol, on the other hand, is the estrogen primarily produced by the placenta in pregnant women. Together the estrogens, which are typically at their highest levels in the blood during ovulation, stimulate growth of the egg follicle, thicken the wall of the uterus, facilitate muscle contractions, and in lower animals, induce estrus. The hormones are also responsible for breast development and a number of other physical differences between males and females.

Estrone was first isolated in 1929 by American biochemist Edward Adelbert Doisy, who later isolated estriol (1930) and estradiol (1935) as well. These notable achievements were an important step towards the development of oral contraceptives, which are largely composed of estrogens. The reason that these hormones are effective for such an application is that they inhibit the pituitary glandís secretion of follicle-stimulating hormone and can, consequently, suppress ovulation. Synthetic estrogen is also commonly prescribed to menopausal women in order to lessen undesirable physical effects, such as hot flashes, caused by the bodyís hormonal changes and is sometimes used as a treatment for prostate cancer.


BACK TO THE CHEMICAL CRYSTALS GALLERY

BACK TO THE POLARIZED LIGHT GALLERY

Questions or comments? Send us an email.
© 1998-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Tuesday, Jul 25, 2006 at 09:03 AM
Access Count Since November 20, 2003: 9293
All of the images in this gallery were captured with a QImaging Retiga camera system.
For more information on these cameras, use the button below to access
the QImaging website:
Visit the QImaging website.
For more information on microscope manufacturers,
use the buttons below to navigate to their websites: