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Motic Eu
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How a small intestinal roundworm contributed to genetics
Cross-sections at the right place in the uterus of a female Ascaris megalocephala can be used to locate eggs in different stages of the first segmentation mitosis*. After fixation and coloration of the sections, the chromosomes appear colored. The egg of th...
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The grainy taste of pear flesh
Sclerenchyma cells are derived from parenchymal cells, which form secondary thickening edges in the cell wall. These are rich in lignin, which practically does not allow any substances getting through, which finally leads to dying of the cell content. Scle...
The grainy taste of pear flesh
The grainy taste of pear flesh
moticeuropeamericasblog.blogspot.com
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Silverberry and the universe
A prepared slide of Silverberry scaly hair is often found in microscopy starters packages for amateurs. The beautiful colors and shapes do well under the microscope.  An entirely different picture emerges when blue light excitation is applied. It is as if y...
Silverberry and the universe
Silverberry and the universe
moticeuropeamericasblog.blogspot.com
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Smell at a distance
The female silk worm moth (Bombyx mori) makes the pheromone bombykol in a special organ in her abdomen. When she is prepared to mate she releases this to attract males. A male silk worm moth has two long antennas that are very sensitive to the odor of the f...
Smell at a distance
Smell at a distance
moticeuropeamericasblog.blogspot.com
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Surface structures easily revealed
As it is known, revealing the surface structure of minerals and fossils can be done by making an ultra-thin section or an acetate peel. An ultra-thin section is a thin slice of a mineral or fossil mounted on a glass slide and viewed under a microscope. Prep...
Surface structures easily revealed
Surface structures easily revealed
moticeuropeamericasblog.blogspot.com
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Muscovite under polarization microscope
Muscovite has an anisotropic crystal structure, with two optical axis and a negative optical sign. The images and video taken with a polarization microscope with crossed polarizers and the Bertrand lens in place, are showing interference images (without lam...
Muscovite under polarization microscope
Muscovite under polarization microscope
moticeuropeamericasblog.blogspot.com
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Basics of Light Microscopy: Incident Light Microscopy for opaque samples (I)
A closer look on Incident Light Microscopy reveals a new and noticeable fact. In a compound microscope for opaque samples, the objective plays two roles. First, like in a Transmitted light setup the objective is part of the imaging process. Quality and perf...
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A pest on grapes
Uncinula necator or powdery mildew, a basidiomycete, is a pest on grapes. Its septate hyphae forms a mycelium on the surface of the leaves similar to a spider web. Special hyphal branches, the haustoria, penetrate the host cells to absorb food substances, t...
A pest on grapes
A pest on grapes
moticeuropeamericasblog.blogspot.com
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A pest on grapes
Uncinula necator or powdery mildew, a basidiomycete, is a pest on grapes. Its septate hyphae forms a mycelium on the surface of the leaves similar to a spider web. Special hyphal branches, the haustoria, penetrate the host cells to absorb food substances, t...
A pest on grapes
A pest on grapes
moticeuropeamericasblog.blogspot.com
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A medicinal parasite
Mistletoe (Viscum album), sinkers in host tissue, longitudinal. The evergreen, spherical shrub of about 1 m in diameter grows on different trees. As a semi-parasite the mistletoe assimilates with its leaf green. The sinkers of the mistletoe penetrate deep i...
A medicinal parasite
A medicinal parasite
moticeuropeamericasblog.blogspot.com
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