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 ?
Traditionally, Class AB amplifiers have been widely used in the audio industry, but Class D amplifiers were limited to applications such as mini-systems and DVD receivers where high fidelity was a second priority to form factor.
According to a report published by the semiconductor industry analyst, Steve Sziron at Inside Chips, "The technology matches the sound quality of analog amps and the size and low heat generation of Class D amplifiers, and is sufficiently inexpensive to go into mass market applications.
The TDA892x family of Class D amplifiers will have particular value for DVD receivers and lifestyle micro systems, where space is very limited.
Findings verified that JamTech's technology exceeds measurements typically achieved by traditional analog pulse width modulation (PWM) Class D amplifiers and delta-sigma PWM digital amplifiers for both absolute dynamic range and spectral noise floor, two important measures of fidelity in digital audio systems.
The JM2020, features a monolithic design integrating both the modulator and power stage into a single chip, and delivers best in class audio fidelity at a price comparable to traditional Class D amplifiers and newer delta-sigma PWM digital amplifiers.
Performance results verify that JamTech's technology exceeds measurements typically achieved by traditional analog pulse width modulation (PWM) Class D amplifiers and delta-sigma PWM digital amplifiers for both range of linearity and spectral noise floor, two important measures of fidelity in digital audio systems.
ADI's SSM2301 and SSM2304 Class D amplifiers are designed to efficiently drive speakers in handheld and portable consumer applications by consuming minimal power, employing sigma-delta modulation to reduce electromagnetic interference (EMI) emissions, and integrating a filterless topology that eliminates external components.
For instance, large power class AB amplifiers usually need radiator, but the as powerful class D amplifiers do not need it.