The salivary glands in mammals are exocrine glands, glands with ducts, that produce saliva.
They also secrete...
Salt bridges fall into the broader category of noncovalent interactions. A salt bridge is actually a combination...
Second generation biofuels are biofuels produced from sustainable feedstock. Sustainability of a feedstock is...
A semiconductor is a material with electrical conductivity intermediate in magnitude between that of a conductor...
In genetics and biochemistry, sequencing means to determine the primary structure (sometimes falsely called...
Serotype or serovar refers to distinct variations within a species of bacteria or viruses or among immune cells of...
Silicones are inert, synthetic compounds with a variety of forms and uses. Typically heat-resistant and...
A single-nucleotide polymorphism (SNP) is a DNA sequence variation occurring when a single nucleotide in the...
Small interfering RNA (siRNA), sometimes known as short interfering RNA or silencing RNA, is a class of...
A somatic cell is any biological cell forming the body of an organism; that is, in a multicellular organism, any...
The term sperm refers to the male reproductive cells.
In the types of sexual reproduction known as anisogamy...
A spermatozoon is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon...
In cell biology, spindle apparatus refers to the subcellular structure that segregates chromosomes between...
Stem cells are undifferentiated cells that have the ability to divide (proliferation) and convert to a different...
The stigma (or eyespot apparatus) is a photoreceptive organelle found in the flagellate or (motile) cells of...
The striatum is a subcortical part of the forebrain. It is the major input station of the basal ganglia...
Stroma, in botany, refers to the colourless fluid surrounding the grana within the organelle plastid,...
Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. A white, odorless,...
Small Ubiquitin-like Modifier (or SUMO) proteins are a family of small proteins that are covalently attached to...
In medicine and psychology, a syndrome is the association of several clinically recognizable features, signs...
Syphilis is a sexually transmitted infection caused by the spirochete bacterium Treponema pallidum. The primary...