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Single heterocysts develop about every 9-15 cells, producing a one-dimensional pattern along the filament. The interval between heterocysts remains approximately constant even though the cells in the filament are dividing. The bacterial filament can be seen as a multicellular organism with two distinct yet interdependent cell types.
Peripheral blood smear in patient with thrombotic thrombocytopenic purpura. Typical schistocytes are annotated. A schistocyte (from Greek schistos for "divided" and kytos for "hollow" or "cell") is a fragmented part of a red blood cell. Schistocytes are sometimes referred to as helmet cells because of their irregular shape from mechanical force ...
A blood cell (also called a hematopoietic cell, hemocyte, or hematocyte) is a cell produced through hematopoiesis and found mainly in the blood. Major types of blood cells include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
Akinetes usually develop in strings with each cell differentiating after another and this occurs next to heterocysts if they are present. [1] Development usually occurs during stationary phase and is triggered by unfavorable conditions such as insufficient light or nutrients, temperature, and saline levels in the environment.
Their cell size varies from less than 1 μm in diameter (picocyanobacteria) up to 100 μm (some tropical forms in the genus Oscillatoria) [39] [40] [41] Filamentous forms exhibit functional cell differentiation such as heterocysts (for nitrogen fixation), akinetes (resting stage cells), and hormogonia (reproductive, motile filaments). These ...
President Donald Trump has issued a slew of executive orders (EO) since beginning his second term, including one that may have an impact on your tax refund.One of Trump’s EOs initiated a hiring ...
Heterocysts on Aphanizomenon flos-aquae. One of the main morphological characteristics of the genus Aphanizomenon is the tendency to form fascicles of trichomes containing mainly vegetative cells. [6] [5] The individual vegetative cells that form Aphanizomenon flos-aquae are cylindrical and elongated. Each cell is composed of hyaline. [5]
The furlough of hundreds of institutional support contractors, who work in the U.S. including at USAID's offices, comes after the administration put on leave about 60 career officials at USAID on ...