منابع مشابه
Flagellation in Plesiomonas Shigelloides Strains
In total, 131 strains of Plesiomonas shigelloides isolated from various sources were tested for peritrichous flagella by a flagella staining method. When incubated on a solid medium for 18 hr at 25 C, peritrichous flagella were demonstrated in 89(68%) of them. With an electron microscope, the peritrichous flagella were clearly distinguished from the lophotrichous ones by their wavelength.
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The bacterium Vibrio fischeri requires bacterial motility to initiate colonization of the Hawaiian squid Euprymna scolopes. Once colonized, however, the bacterial population becomes largely unflagellated. To understand environmental influences on V. fischeri motility, we investigated migration of this organism in tryptone-based soft agar media supplemented with different salts. We found that op...
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Human mesenchymal stem cells (hMSCs), which also called mesenchymal stromal cells, are multipotent stem cell. Human MSCs typically are positive for the surface markers CD44, CD73, CD90, CD105, CD106, and also negative for hematopoietic markers CD34 and CD45.These cells can be isolated from postnatal bone marrow, adipose tissue, placenta, and scalp tissue, as well as from various fetal tissues. ...
متن کاملGenetic control of flagellation in Bacillus subtilis.
Flagellation in Bacillus subtilis was shown to involve at least three loci: a gene H controlling the specificity of the flagellar antigen; a gene fla controlling the presence or absence of flagella; and a gene mot controlling the function of the flagella. The loci were shown to be nonallelic and unlinked in transformation tests. Strains W 23 and SB 108-b, a derivative of strain 168, were shown ...
متن کاملCalcium regulation of flagellation in Naegleria gruberi.
The amoeba-to-flagellate transformation of Naegleria gruberi was studied, exploring the role of calcium in control of this pattern of morphogenesis. A direct and an indirect role for calcium are postulated based on experimental results. Direct inhibition in the presence of calcium is caused by ionophore A23187, substances with ionophore-like activity (amphotericin) and the hormone calcitonin, w...
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ژورنال
عنوان ژورنال: Nature
سال: 1985
ISSN: 0028-0836,1476-4687
DOI: 10.1038/314401a0