A longitudinal section through the tip of an alfalfa nodule infected with a strain of S. meliloti carrying a GFP fusion to the ctrA promoter (green) and stained with propidium iodide (the red color, PI stains nucleic acids, and the rapidly dividing cells of meristem are bright red)
Image courtesy of the Long lab
Expression of the immediate early gene, egr1 (black silver grains) in gonadotropin releasing hormone (GnRH) containing neurons (brown stain) twenty minutes after social ascent in male cichlid fish, Astatotilapia burtoni. (scale bar = 10 um)
Image courtesy of the Fernald Lab
The mitotic spindle of a human U2OS cell in metaphase, stained for microtubules (green), DNA (blue) and gamma-tubulin (red). Gamma-tubulin is a specialized tubulin limited to the centrosomes at the poles of the spindle.
Image courtesy of the Stearns Lab
Apical dendrites from two neighboring pyramidal neurons 3 days after expressing mCD8 alone (red) or expressing both mCD8 (red) and myc-tagged Rac1N17 (green) and therefore appears yellow.
Image courtesy of the Luo Lab
A cortical neuron stained for Doublecortin (red), a protein required for normal neuronal migration. In green is antibody staining for the 12E8 monoclonal antibody, which indirectly reveals sites at which kinases such as MARK/PAR1 have phosphorylated target substrate proteins at the sequence KIGS. The staining patterns are completely complementary.
Image courtesy of the McConnell Lab
A newly hatched paralarva of the Humboldt squid, /Dosidicus gigas/, a product of artificial fertilization. The first chromatophores, the ink sac, and eyes can all be easily seen. Also visible is the internal yolk sac that will sustain the hatchling during its first few days of life.
Image courtesy of the Gilly Lab