These reports are consistent with the existence of discrete interconvertible subsets of cells existing within the stem cell compartment, and that some of these subsets are closer to exiting the stem cell compartment than others.
Bimodality is an important biological phenomenon as it implies the existence of discrete populations (e.g., with and without disease) or discrete genetic or environmental influences on a trait.
Presumably, this reflects the differential activities of APC5 and APC7 in transcription and cell-cycle control and might suggest the existence of discrete subpopulations of APC/C performing distinct functions.
Traditional views have tended to assume the existence of discrete, internal representations realized by underlying, sharply distinct and highly specified mechanisms in the brain.
The existence of discrete and separate volcanic hills indicates that volcanism at a spreading centre is episodic.
Thus, it was remarked that Bohr had not really derived the existence of discrete orbits from more fundamental principles but had merely imposed them on the model.
These studies led Mendel to postulate the existence of discrete units of heredity that segregate independently of one another during the formation of reproductive cells.
January 12 , 1580Brussels, Belgium December 30, 1644 Vilvoorde, Spanish Netherlands Jan Baptista van Helmont, Jan also spelled Joannes (born Jan . 12 , 1580 [1579Old Style], Brussels [Belg.] died Dec. 30, 1644, Vilvoorde, Spanish Netherlands [Belg.]) Flemish physician, philosopher, mystic, and chemist who recognized the existence of discrete gases and identified carbon dioxide.
From the precise mathematical 3 1 ratio (of which he found several other examples), he deduced not only the existence of discrete hereditary units (genes) but also that the units were present in pairs in the pea plant and that the pairs separated during gamete formation.
A possible existence of discrete breathers in graphene with the frequency of about 714 cm−1 was shown.
