Seaweeds in a a tidepool on the coast of Maine.
Malaria parasites (and their kin) can be viewed as minimal eukaryotes, harboring a nucleus (yellow), a secretory pathway the Golgi (purple) and specialized ‘rhotpry’ organelle (black), and two endosymbiotic organelles, the mitochondrion (red) and apicoplast (green).
Escherichia coli cells with fluorescently labeled chromosomal loci.
Dicer-deficient oocytes stained for beta-tubulin and DNA to visualize the meiotic spindle. DNA was counterstained with Sytox green. In the absence of Dicer, mouse oocytes develop abnormal spindles and often fail to complete the first meiotic division, revealing a novel role for small RNAs during meiosis.
motility mutants stab-inoculated on a 0.3% agar motility plate. The “halos” and
“rings” likely reflect the motility of this archaeon following gradients of
attractant or repellent chemicals.
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