PubMed · 889345
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A Bourlond. 1977. Bands in cellular blue nevus.. https://doi.org/10.1001/archderm.1977.01640080131032
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A simple method for handling electron microscope grids is described here. While assuring their identification and safety, this method provides improved handling, temporary storage, and identification of grids bearing ultra-thin sections, and in addition, provides a novel method for preparing bulk samples. Grids are attached at their edges to the weakly adhesive surface of a "Post-it" note pad which sits in a petri dish. The grids are safely immobilized on the pad, classified based on their location, and identified by convenient pad notation. Grid manipulation and identification are simplified using this device, which is easily assembled from readily available and inexpensive materials.
Filtrates prepared from heavily grown agar cultures of M. pulmonis strain Negroni-52 formed plaques on lawns of A. laidlawii strain JAl but not on those of M. pulmonis strains Ash or Negroni-52. The plaque-forming agent proved to be rod-shaped particles morphologically identical with mycoplasmavirus group 1. Evidence supporting the conclusion that the virus originated from Negroni-52 has been obtained. Electron microscopy revelaed that Negroni-52 is also a carrier of long-tailed phage-like particles.