Researchers can use a metric called the particle number concentration (PNC) to calculate the number of particles in a sample, such as the number of marbles in a jar. Researchers at the National ...

Correct measurement of blood pressure in infants is essential because blood pressure is an important indicator of cardiovascular status. This article provides a review of the fundamental principles of ...

Mammary tumors similar to those observed in women can be induced in rats by intraperitoneal administration of N-methyl-N-nitrosourea. Determining tumor volume is a useful and quantitative way to ...