Results 261 to 270 of about 1,574 (297)

Bioconcentration factors and lipid solubility

Environmental Science & Technology, 1991
The log-log relationship between bioconcentration and hydrophobicity breaks down for several medium and high molecular weight solutes that bioconcentrate either to a small extent or not at all. Much of the failure is attributed to the relatively low solubility of these compounds in lipid.
Sujit Banerjee, George L. Baughman
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Factors affecting the solubility of ammonium acid urate

Clinica Chimica Acta, 1979
Evidence is presented that sodium acid urate exists in aqueous solution in a non-colloidal state. The levels of ammonium and urate ions required to precipitate ammonium acid urate have been established for some aqueous media. The effect of pH on the formation product of ammonium acid urate is described.
R C, Bowyer, R K, McCulloch, J G, Brockis, G D, Ryan   +3 more
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Factors affecting lignin solubility

Russian Journal of Applied Chemistry, 2011
The solubility of lignin in aqueous NaOH solutions was studied in relation to the lignin molecular weight, temperature, liquid to solid ratio, and ionic strength. A new procedure for determining the content of phenolic hydroxyls in lignin was developed. A formula was suggested for calculating the lignin solubility in aqueous alkali solutions.
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MACROPHAGE‐LYMPHOCYTE INTERACTIONS MEDIATED BY SOLUBLE FACTORS*

Annals of the New York Academy of Sciences, 1979
Adherent-cell-depleted primed rabbit splenocytes were capable of mounting an in vitro response to SRBC. The addition of alveolar macrophages (AM) to adherent-cell-depleted or unseparated lymphoid cell populations resulted in significant suppression of the PFC response. Suppressive activity was limited to AM and dependent on the presence of a ratio of 1
H B, Herscowitz, K J, Pennline, R E, Conrad, S E, Ullrich, H R, Gerber   +4 more
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Soluble factor activation of human B lymphocytes

Nature, 1981
Medium conditioned by lectin (and/or antigen)-stimulated human peripheral blood lymphocytes has been shown to contain factors, termed interleukin 1 (IL-1) and interleukin 2 (IL-2)1,2, which augment and maintain human T-cell proliferation3–6, respectively.
R J, Ford, S R, Mehta, D, Franzini, R, Montagna, L B, Lachman, A L, Maizel   +5 more
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Lipoid Solubility as a Factor in the Toxicity of Contact Insecticides

Nature, 1952
CONTACT insecticides as a class are lipoid-soluble, and it is reasonable to surmise that the first step in their uptake or pick-up by the insect might be generally their dissolution in the epicuticular waxes. All the same, experimental evidence of this phenomenon does not seem to exist, and relative solubility of insecticidal chemicals in cuticular ...
S, PRADHAN, M R G K, NAIR, S, KRISHNASWAMI   +2 more
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Production of Soluble Virulence Factor by Escherichia Coli

Journal of Urology, 1995
Experimental evidence suggests that adherence is a prerequisite for bacterial infection. We demonstrated that transitional cells at the surface of the bladder are coated with glycosaminoglycans (proteoglycans and mucus) whose presence efficiently decreases bacterial adherence to the mucosa.
M, Mostafavi, P C, Stein, C L, Parsons
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Soluble Angiogenic Factors in Patients With Acute Pancreatitis

Journal of Clinical Gastroenterology, 2011
Angiogenic factors are involved in the physiopathology of several inflammatory diseases and they probably play a role in the pathogenesis of acute pancreatitis (AP).To investigate if angiogenic factors are elevated in patients with AP, their relationship with severity and clinical evolution of AP, and their use as prognosis markers of AP.A case (25 ...
Laura, Espinosa, Pablo M, Linares, Alicia, Bejerano, Cristina, Lopez, Argeme, Sanchez, Ricardo, Moreno-Otero, Javier P, Gisbert   +6 more
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[Soluble factors with immunosuppressive activity in human neoplasms].

Minerva medica, 1988
A number of the mechanisms implicated in the phenomenon of immunosuppression present in tumour-carrying patients are described. In particular, stress is laid on factors soluble to immunosuppressive activity identified in the serum or in other biological fluids of these patients.
Baroni, R, Guidi, Luisa, Bartoloni, Carlo, Gambassi, Giovanni   +3 more
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Soluble-Factor Induction of B-Cell Growth

1985
Despite a detailed knowledge of the antigen-specific receptor expressed on the membrane of B lymphocytes, the precise mechanism by which B lymphocytes are activated during an antigenic encounter has remained an area of controversy. Contending viewpoints originally attributed induction of proliferation to the delivery of signals at membrane-bound ...
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