Results 11 to 20 of about 135,343 (265)

Phytochrome Radioimmunoassay [PDF]

open access: yesPlant Physiology, 1979
A phytochrome radioimmunoassay with a detection limit of about 2 nanograms has been developed. The radioimmunoassay does not suffer from the potential drawbacks of the commonly used spectral assay and requires less than 1 microliter of crude extract from dark-grown plants for quantitation of phytochrome.
R E, Hunt, L H, Pratt
openaire   +2 more sources

Current Advances in Immunoassays for the Detection of β2-Agonists

open access: yesFoods, 2022
β2-agonists are a group of synthetic phenylethanolamine compounds which are traditionally used for treating bronchospasm. These compounds can also increase skeletal muscle mass and decrease body fat.
Shuyu Ouyang, Shuting Yu, Yingying Le
doaj   +1 more source

Screening for non-classic congenital adrenal hyperplasia in women: New insights using different immunoassays

open access: yesFrontiers in Endocrinology, 2023
ContextThe 250µg-cosyntropin stimulation test (CST) is used to diagnose non-classic congenital adrenal hyperplasia (NCCAH). The current recommendation is to perform CST when follicular 17-hydroxyprogesterone (17OHP) is 6-30 nmol/L, a cutoff derived from ...
Afif Nakhleh   +13 more
doaj   +1 more source

Method Validation and Establishment of Reference Intervals for an Insulin-like Growth Factor-1 Chemiluminescent Immunoassay in Cats

open access: yesVeterinary Sciences, 2023
Previously, radioimmunoassay (RIA) has been the only assay to measure insulin-like growth factor-1 (IGF-1) to diagnose hypersomatotropism (HS). Due to radiation concerns, availability, and the cost of IGF-1 RIA, validation of assays for automated ...
Arne Güssow   +6 more
doaj   +1 more source

Determination of progesterone contents in female silkworm (Bombyx mori) moth by radioimmunoassay

open access: yes浙江大学学报. 农业与生命科学版, 2008
Method for determining the contents of progesterone in female silkworm (Bombyx mori) moth was studied. The progesterone could be efficiently extracted out from the female silkworm moth according to following conditions: grinding the female moth powder ...
GU Yan-yan, HE Wei-qiang, SHI Lian-gen
doaj   +1 more source

Hypocretin Levels in Sporadic and Familial Cases of Canine Narcolepsy

open access: yesNeurobiology of Disease, 2001
Familial and sporadic forms of narcolepsy exist in both humans and canines. Mutations in the hypocretin receptor 2 gene (Hcrtr 2) cause canine familial narcolepsy.
Beth Ripley   +4 more
doaj   +1 more source

Utilization of Polyspecific Antiserum for Specific Radioimmunoassays: Radioimmunoassays for Rat Fetuin and Bikunin Were Developed by Using Antiserum Against Total Rat Serum Proteins [PDF]

open access: yes, 1993
Polyspecific antiserum against total rat serum proteins was used to develop specific and sensitive radioimmunoassays for fetuin and bikunin, two minor protein components of rat plasma. The radioimmunoassays proved to be highly useful to trace bikunin and
Edwin Fink   +6 more
core   +1 more source

Neuroimmunomodulation in Cancer Patients: Correlations between Melatonin and ß-Endorphin Blood Levels and T Helper/Suppressor Ratio

open access: yesThe International Journal of Biological Markers, 1988
The pineal gland and opioid peptides play roles in the neuroendocrine control of immunity. Both neuroendocrine and immune dysfunctions have been observed in cancer but the importance of the altered secretion of neurohormones in the immunoincompetence of ...
S. Barni   +6 more
doaj   +1 more source

The Development of a Direct Homologous Radioimmunoassay for Serum Cortisol [PDF]

open access: yes, 1981
Peer ...
Giesemann, G.   +4 more
core   +2 more sources

Secretion of the arginine-rich and A-I apolipoproteins by the isolated perfused rat liver

open access: yesJournal of Lipid Research, 1977
Rates of secretion of the arginine-rich and A-I apolipoproteins into perfusates of rat livers were measured by specific radioimmunoassays. Livers were perfused for 6 hr in a recirculating system in the presence or absence of 5,5′-dithionitrobenzoic acid,
T E Felker   +3 more
doaj   +1 more source

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