S
<radiobiology> Variable generally used for either entropy or the Poynting flux of electromagnetic wave energy (con (more...)

S1 Nuclease Mapping
A method for locating the 5' end of a transcript in a mixture of RNA.

S1-RNase
<enzyme> Isolated from petunia hybrida; 201 amino acid residues; amino acid sequence has been determined; genbank (more...)

S3 Gallop
<clinical sign> A finding which can be heard on auscultation of the heart in the setting of congestive heart failu (more...)

S4 Gallop
<clinical sign> A presystolic atrial sound that immediately precedes the first heart sound (S1). This finding on a (more...)

Kinase
<enzyme, molecular biology> Widely used abbreviation for phosphokinase, an enzyme catalysing transfer of phosphate (more...)

Summation Gallop
Gallop rhythm in which the gallop sound is due to superimposition of third and fourth heart sounds; sometimes heard in n (more...)

Saan
<ethnology> Same as Bushmen.

Sabadilla
<botany> A Mexican liliaceous plant (Schaenocaulon officinale); also, its seeds, which contain the alkaloid veratr (more...)

Sabal
<botany> A genus of palm trees including the palmetto of the Southern United States.