orcein

(redirected from E121)
Also found in: Dictionary, Wikipedia.
Related to E121: E120

orcein

 [or-se´in]
a brownish-red coloring substance obtained from orcinol; used as a stain for elastic tissue.

or·ce·in

(ōr'sē-in), [old C.I. 1242]
A natural dye derived from orcinol by treatment with air and ammonia; as a purple dye complex it is used in various histologic staining methods.

orcein

/or·ce·in/ (or-se´in) a brownish-red coloring substance obtained from orcinol; used as a stain for elastic tissue.

or·ce·in

(ōr'sē-in)
A natural dye derived from orcinol that is used in various histologic staining methods.

orcein

a brownish-red coloring substance obtained from orcinol; used as a stain for elastic tissue.

orcein-Giemsa stain
useful because of its capacity to stain elastic fibers, the metachromatic granules of mast cells, and differentiates smooth muscle from collagen.
References in periodicals archive ?
All Asyst Interface A solutions are fully compliant with the complete set of SEMI EDA requirements, including E121, E128, E120.
Orgill recommends getting an E121 form if you are a retiree, an E106 form if you are living or working abroad for up to two years, or paying local national insurance contributions if you change your country of residence.
EIB technology has been implemented per SEMI standard E120 (Common Equipment Model), E125, E132 & E134, and follows XML guidelines as established by SEMI E121 and E128.
It consists of SEMI standards E120, E121, E125, E132, E134 and the E147 guideline.
In the first quarter of 2004, other financial expenses, net of provisions, amounted to E121 million compared to E146 million in the first quarter of 2003.
The supported SEMI standards are E120, E121, E125, E132 and E134.