Castleman disease must be distinguished from other disorders that can demonstrate Castleman-like lymph node features, including reactive lymph node hyperplasia, autoimmune disorders, and malignancies.
Relative humidity (abbreviated RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at the same temperature. Relative humidity depends on temperature and the pressure of the system of interest.
When Does Condensation Occur. Condenstation occurs when the the air cools, and the water vapor reaches its satuation level. (aka relative Humidity) Relative humidity is defined as the ratio of the partial pressure of water vapor in a parcel of air to the saturated vapor pressure of water vapor at a prescribed temperature.