Results 251 to 260 of about 6,324,191 (295)

A method for the biological assay of phosphaturic activity in parathyroid extracts.

Endocrinology, 1959
A biological assay method has been developed for estimation of the phosphaturic activity of parathyroid extracts. It is based on the increased urinary excretion of inorganic phosphate by 2-month old male rats during the first 6 hours after ...
A. D. Kenny, P. L. Munson
semanticscholar   +1 more source

An Approach to the Analysis of Data for Semi-Quantal Responses in Biological Assay

, 1959
In a typical biological assay a population of living organisms is exposed to varying quantities of the material under investigation and the reaction of the various individual members of the population is subsequently correlated with the applied dose. The
J. Ashford
semanticscholar   +1 more source

Principles of Biological Assay [PDF]

, 1956
All the types of bioassay with which I shall deal are concerned with estimating the potency of a given substance, i.e. its power to produce a certain response when applied as a stimulus to a test-subject. The qualifier “biological” refers to the test-subject, which will usually be an organism of some kind, although the methods developed in this field ...
openaire   +1 more source

Biological Assay of Pumice Soil Fertility

, 1965
The fertility of pumice soils is difficult to assess by laboratory analysis. A biological assay of growth responses yields more meaningful information. Four pumice soils common in central Oregon were assayed in the greenhouse using ponderosa pine as an ...
C. T. Youngberg, C. T. Dyrness
semanticscholar   +1 more source

Insulin-like growth factors and their binding proteins: biological actions.

Endocrine reviews, 1995
I. Introduction THE insulin-like growth factors were discovered on the basis of their ability to stimulate cartilage sulfation and to replace the “sulfation factor activity” of GH, as determined using an in vivo assay, in an in vitro test system (1). The
John I. Jones, D. Clemmons
semanticscholar   +1 more source

Design of a biological assay method for the detection and estimation of estrogenic residues in the edible tissues of domestic animals treated with estrogens.

Endocrinology, 1958
Experimental designs are described for the biological assay of the edible tissues of stilbestrol-treated animals for residual estrogenic activity. When residual estrogenic activity is found, an estimate of the amount in terms of stilbestrol equivalents ...
E. J. Umberger, G. Gass, J. Curtis
semanticscholar   +1 more source

Electromagnetic actuation and microchannel engineering of a polymer micropen array integrated with microchannels and sample reservoirs for biological assay patterning

, 2007
A polymer (SU-8) micropen array was fabricated for application to biological assay patterning. The micropen, which is integrated with a microchannel and a sample reservoir, can be actuated by Lorentz force induced on an integrated metal actuator. Current
M. Im, Il-Joo Cho, K. Yun, E. Yoon
semanticscholar   +1 more source

Evaluation of the effect of isomerization on the chemical and biological assay of vitamin D. Analysis of fat-soluble vitamins X.

Journal of Pharmacy and Science, 1968
The reversible thermal isomerization of calciferols (D) to precalciferols(P), leading to a temperature-dependent equilibrium in solutions, interferes with many chemical and biological analytical procedures for the evaluation of vitamin D products.
J. Buisman, K. Hanewald, F. Mulder, J. R. Roborgh, K. J. Keuning   +4 more
semanticscholar   +1 more source

Biologic Assay of Mercury Ointments*†

Journal of the American Pharmaceutical Association (Scientific ed.), 1947
Using the storage of mercury in the kidney of the rat as a measure of cutaneous penetration, 8 official mercury ointments have been assayed. Mercury oleate and nitrate ointments showed the greatest penetration; calomel and yellow mercuric oxide showed the least.
Frieda M Kunze, Elizabeth A. Vos, Edwin P. Laug   +2 more
openaire   +3 more sources

Biological assay

The Design & Development of Novel Drugs and Vaccines, 2021
Praveen Rai, Sujeet Singh, S. Nimesh
semanticscholar   +1 more source