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

Brightfield Microscopy Digital Image Gallery

Heavily Pigmented Skin

Almost all living organisms exhibit pigmentation, and some are capable of adapting the characteristic based on their environment. Both flora and fauna are capable of synthesizing pigments, and animals have the additional capability of deriving pigments from their diet.

View an image of the heavily pigmented skin section at 10x magnification.

Pigments are what dictate the coloration of an organism. The chief pigments found in animals include guanine, which is expressed as the color white or as an iridescent hue, the carotenes, which range from yellow to red, the melanins, which are perceived as brown or black, and the hemes, which are responsible for the reddish hue of blood hemoglobin. Some of these pigments function in various physiological activities as well as providing color. Most notable in this regard are the carotenes, which are important in the vitamin synthesis of animals, as well as chlorophyll synthesis in plants.

In humans, melanins are largely responsible for the relative darkness of the skin, as well as the hair and the irises of the eyes. High levels of localized melanin are also the cause of freckles and moles. The amount of melanin pigments in the body are usually a function of genetics, but may be altered by various means. A suntan, for instance, is an indication of the overproduction of melanin caused by exposure to ultraviolet light. Certain disorders, such as Recklinghausen’s neurofibromatosis, which involves the improper storage of melanin in melanocytes, can also cause unusually high levels of pigmentation. Underproduction of melanin or a related absence of melanocytes may result from a number of conditions as well, including albinism, vitiligo, and phenylketonuria.

BACK TO THE BRIGHTFIELD MICROSCOPY IMAGE 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, Nov 25, 2003 at 04:35 PM
Access Count Since November 25, 2003: 29003
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: