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A. Morula and B. cross section of a blastula displaying the blastocoel and blastoderm of early animal embryonic development. Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm.
50 μm – typical length of a human liver cell, an average-sized body cell [citation needed] 50 μm – length of a silt particle; 60 μm – length of a sperm cell; 78 μm — width of a pixel on the display of the iPhone 4, marketed as Retina Display [97] 70 to 180 μm – thickness of paper
The genus contains at least 68 described extant taxa, but the true number of species is a matter of debate. The type species of the genus is Coregonus lavaretus . Most Coregonus species inhabit lakes and rivers, and several species, including the Arctic cisco ( C. autumnalis ), the Bering cisco ( C. laurettae ), and the least cisco ( C ...
Lake whitefish are found throughout much of Canada and parts of the northern United States, including all of the Great Lakes. The lake whitefish is sometimes referred to as a "humpback" fish due to the small size of the head in relation to the length of the body. [3] [a] It is a valuable commercial fish, and also occasionally taken by sport ...
The round whitefish has between 42–46 scales around its body, 22–24 scales around its caudal peduncle, and 83–96 scales in its lateral line. In addition, this species has 87–117 pyloric caeca, 59–63 vertebrae, and less than 20 gill rakers. The round whitefish is different than other whitefish by having one flap between the nostril ...
Many freshwater whitefish species have also made up an important component of the traditional diets of many indigenous people who have historically inhabited its range. [15] [16] Smoked whitefish is sold in American delicatessens, especially those specializing in Jewish cuisine, either filleted [17] [18] or made into whitefish salad. [19] [20]
The table lists various objects and units by the order of magnitude of their volume.. Chain structures in meteorite fragment ALH84001 Electron micrograph of icosahedral adenovirus A scanning electron microscope image of normal circulating human blood showing red blood cells, several knobbly white blood cells including lymphocytes, a monocyte, a neutrophil and many small disc-shaped platelets ...
In physics, the microscopic scale is sometimes regarded as the scale between the macroscopic scale and the quantum scale. [2] [3] Microscopic units and measurements are used to classify and describe very small objects. One common microscopic length scale unit is the micrometre (also called a micron) (symbol: μm), which is one millionth of a metre.