Crithidia

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Crithidia

(kri-thid'ē-ă),
A genus of asexual, monogenetic, insect-parasitizing flagellates in the family Trypanosomatidae.
[Mod. L., fr. G. krithidion, dim. of krithē, barley]

cri·thid·i·a

(kri-thid'ē-ă),
Former term for epimastigote.
[Mod. L. fr. G. krithidion, dim. of krithē, barley]

Crithidia

/Cri·thid·ia/ (krĭ-thid´e-ah) a genus of parasitic protozoa found in the digestive tract of arthropods and other invertebrates.

Crithidia

a genus, the trypanosomes, in the family Trypanosomatidae found in arthropods and other invertebrates.

Crithidia luciliae
commercial preparations of this organism are used as substrate in assays for serum antibodies against native DNA.
References in periodicals archive ?
Anti-dsDNA detection: Three main methods are available for the detection of anti-dsDNA which are the Crithidia luciliae immunofluorescence (CLIF) method, Farr assay, and ELISA.
Crithidia luciliae, a simple substrate for the determination of anti-dsDNA with the immunofluorescence technique.
For this analysis, the reference ranges of C3 and C4 from The Ohio State University Clinical Laboratory were used to identify the lower limits of normal, and the presence or absence of ADNA was determined by a Crithidia luciliae assay.
Three clinical laboratory methods are commonly used for the determination and quantification of anti-dsDNA: Crithidia luciliae indirect immunofluorescence, ELISA, and RIA (the Farr assay).
Samples showing homogeneous staining patterns were reevaluated using the Crithidia luciliae substrate (ImmunoConcepts), which specifically detects antibodies to double-stranded DNA (dsDNA), and by enzymelinked immunosorbent assay (ELISA) to detect antibodies to chromatin (INOVA Diagnostics, San Diego, CA), both according to the manufacturers' instructions.
Ideal for screening or simultaneous follow up titration of positive ANA sera, the NOVA Lite Hep2k slide contains optimally fixed Hep-2k cells and Crithidia luciliae together in the same well.