Science is the poetry of Nature.

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Posts tagged "confocal"


Primary mammary epithelium in 3D Matrigel culture.

The mammary gland, which produces milk, is composed of a dense network of ducts that gradually forms after birth through a complex process of budding, invasion, and branching. At birth, the system is a rudimentary duct tree, but in response to hormones, cells in the ducts proliferate and migrate, allowing the ducts to elongate and invade through the mesenchyme layer of mammary tissue into the mammary fat pad, where they then begin to branch. Puberty brings further structural changes to the system of ducts, whereas pregnancy induces the formation of alveolar structures within the ducts for milk production.

Credit: Andrew J. Ewald, Johns Hopkins University.


Here, the limb of a Scleraxis-GFP mouse embryo is imaged by confocal microscopy. Scleraxis-GFP is a recently discovered, fluorescently labeled transcription factor that is exclusively expressed in tendon cells. In mice, muscles (red), tendons (green), and nerves (blue) of the limbs are largely established by ~14.5 days after fertilization. In humans, this occurs after ~9 weeks of embryogenesis.

By A. Kelsey Lewis, Gabrielle Kardon, Yong Wan (University of Utah) and Ronen Schweitzer (Oregon Health and Science University)


A pollen sac opens on the “four o’clock flower” (Mirabilis jalapa). The image was recorded with a confocal microscope at magnification 100x, field width: 840 μm. Autofluorescence of the sample was recorded in 3 different channels (RGB, dye settings: DAPI [405nm], Acridine Orange [488nm] and Alexa Fluor 546 [543nm]).

By Robert Markus, Stockholm University

(via afro-dominicano)


A confocal image showing the aerial root of an orchid, Phalaenopsis sp.

Image by Shirley Owens, Michigan State University.

(via biocanvas)