PWM

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PWM

Abbreviation for pokeweed mitogen.

mitogen

(mi'to-jen)
A plant-derived protein used in the laboratory to stimulate cell division (mitosis). It is frequently used in vitro to study the proliferation of lymphocytes from blood drawn during a research study. The most commonly used mitogens are phytohemagglutinin and concanavalin A. See: concanavalin A; lectin; phytohemagglutinin

pokeweed mitogen

Abbreviation: PWM
A mitogen isolated from the pokeweed plant, Phytolacca americana. In the presence of T lymphocytes, it has the capacity to induce primed B lymphocytes to proliferate and differentiate into plasma cells.

pokeweed mitogen

Abbreviation: PWM
A mitogen isolated from the pokeweed plant, Phytolacca americana. In the presence of T lymphocytes, it has the capacity to induce primed B lymphocytes to proliferate and differentiate into plasma cells.
See also: mitogen
References in periodicals archive ?
120 DPWMMAX: (DISCONTINUOUS PULSE WIDTH MODULATION MAXIMUM) MODULATION METHOD:
In this paper, a sensor-less control has been modeled by a Xilinx System Generator (XSG) in Matlab/Simulink(R) envi- ronment with speed and position estimation and using space vector pulse width modulation technique for the operation of a novel four leg three phase inverter.
Pulse width modulation signals are generated using a Xilinx Spartan-3E LX45 FPGA board, which has a clock frequency of 50 MHz; the logic used here for pulse generation is counting the clock frequency:
Key words: pulse width modulation, musical instrument digital interface, universal serial bus
Sinusoidal Pulse Width Modulation (SPWM) [2], Space Vector Modulation (SVM) [3], etc.
Output on the C series sensors ranges from zero to 5 Vdc analog or uses a pulse width modulation (PWM) signal and can be powered with a standard 5 V power supply.
He describes their use in high-power semiconductor devices such as power MOSFETs, three-phase ioinverters, carrier-based pulse width modulation, vectorial pulse width modulation for basic three-phase inverters and practical aspects in building them, implementing pulse width modulation algorithms, implementing closed-loop current control, working with resonant three-phase converters (including those which are component-minimized), the AC/DC grid interface based on three-phase voltage source converters, and parallel and interleaved power converters.
Bora, Kansas State University, for "Pulse Width Modulation (PWM) Technique in Precision Anhydrous Ammonia Application and its Valve Durability."
The analyzer utilizes an adaptive algorithm with a pulse width modulation and dynamic constant feedback loop When it is cool prior to performing a test, the problem of artificially high moisture values or potentially burning the sample on some materials from the first test is eliminated.
The display allows frequency modulation on pulse (FMOP), pulse width modulation (PWM) and amplitude modulation (AM) patterns to be seen and measured.
It is able to read the tachometer input for up to eight fans, using a PWM (pulse width modulation) output to control the fan speed.
The valve may be controlled using DC current, open- or closed-loop control, or pulse width modulation (PWM), to cover a broad range of applications.