(1) The current studies suggest that the autochthonous mammary tumor cells, independent of estrogen for cell growth, were still inducible for casein gene expression in vitro and in vivo by appropriate hormones.
(2) A wide but discontinuous distribution of the snail on the north coast of Haiti is confirmed (no autochthonous infections with S. mansoni have been reported).
(3) Furthermore, it was also confirmed that TIL-LAK cells could be induced in autochthonous mouse tumor systems and human gastric tumor systems.
(4) Neither patients' sera nor peripheral blood leukocytes showed significant cytotoxicity against autochthonous tumour cells in microtitre assays.
(5) Neutrophils and macrophages first appeared following transplantation of autochthonous tumor.
(6) Aerobic microorganisms are constantly entering the digestive tract with food, but colonization is resisted by autochthonous anaerobic flora (microbial colonization resistance) and by host-related factors (physiologic colonization resistance).
(7) The mitogenic response of some but not all hyporesponsive spleens from autochthonous tumor bearers was restored after removal of phagocytic macrophages.
(8) When different methods of treatment of the stimulating autochthonous blasts were compared with untreated cells, mitomycin C gave the highest stimulation indices 2 out of 3 tests.
(9) Two tumor models were selected: (a) autochthonous, MNU-induced mammary carcinoma and (b) transplanted rat leukemia L5222.
(10) The promising activities of these new platinum-linked phosphonic acids in autochthonous rat colorectal carcinoma and in human colorectal cancer cell lines warrant further investigations of compounds of this class to elucidate their role in the treatment of colorectal cancer.
(11) Our results demonstrate that anti-inflammation is probably not required for emergence and growth of these autochthonous tumors, that strongly immunogenic tumors may actually enhance macrophage responses and that the effect of tumor bearing on macrophage inflammation is a characteristic of the tumor, including its site and host of origin, its immunogenicity and its transplant generation.
(12) Among 154 different, MCA-induced mouse sarcomas, the immunogenicities of those tumors that had had the shortest original latencies in their autochthonous hosts were of an intermediate level with relatively little scatter.
(13) Antibody-dependent, cell-mediated cytotoxicity in the Moloney sarcoma virus (MSV) system was analyzed in terms of the ability of autochthonous antibody to induce or potentiate cytotoxicity by lymphocytes from animals infected with MSV.
(14) Sera of eight unselected adult patients with acute myelogenous leukemia obtained before and after chemotherapy were repeatedly tested for specific complement-dependent cytotoxicity against autochthonous peripheral white blood cells from the acute leukemia stage and from the remission stage, respectively.
(15) The antitumor activity of the cell-wall skeleton (CWS) of Propionibacterium acnes C7 was examined by using transplantable tumors in syngeneic mice and in guinea pigs, and autochthonous tumors in mice.
(16) Serums from three patients with renal cell carcinoma, one without any recurrent tumor and two with metastases, appear to significantly block the autochthonous and allogeneic lymphocyte cytotoxicity.
(17) This expression of metastatic potential was significantly different (p less than 0.05) from 14 primary cancers without autochthonous host metastases.
(18) Cells from autochthonous mouse mammary carcinomas which display estrogen-independent growth in vivo were studied for their hormonal responses in primary culture.
(19) Autochthonous, homologous, and heterologous immunizations of chickens and rats did not produce a detectable antibody response to a virus-specific tumor surface antigen.
(20) The lysis pattern of autochthonous M. tuberculosis is characterized by a prevalence of sensitivity to phages DS6A, GS4E, BG1, and D34.
Null
Definition:
(a.) Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
(n.) Something that has no force or meaning.
(n.) That which has no value; a cipher; zero.
(v. t.) To annul.
(n.) One of the beads in nulled work.
Example Sentences:
(1) Measurements of acetylcholine-induced single-channel conductance and null potentials at the amphibian motor end-plate in solutions containing Na, K, Li and Cs ions (Gage & Van Helden, 1979; J. Physiol.
(2) DR(+) cells, however, showed no change in percentage and a lesser drop in absolute numbers, suggesting an increase with advancing disease of DR(+), Ig(-) null cells, which may represent immature B cell precursors.
(3) In this report we describe an improvement upon the design by Stanton and Lightfoot for a simple photographic null method to determine the kVp of a diagnostic region x-ray source.
(4) At least two (Rh null and the McLeod type) are responsible for congenital hemolytic disorders.
(5) (2) Sequences of brightness steps of like polarity (either increments or decrements) elicit positive and negative motion-dependent response components when mimicking motion in the cell's preferred and null direction, respectively.
(6) The analysis also involved statistical tests of a modified null hypothesis, the generation of confidence intervals (CIs) and a meta-analysis.
(7) The null potential of both responses became more and less negative with a decrease and an increase, respectively, in the extracellular potassium concentration.
(8) The null mutation of algR was generated in a mucoid derivative of the standard genetic strain PAO responsive to different environmental factors.
(9) Endoneurial fluid pressure (EFP) was recorded by an active, servo-null pressure system after a glass micropipette was inserted into rat sciatic nerve undergoing wallerian degeneration.
(10) In thymo-deprived mice (nude mice and B mice) the percentage of null cells increases during the stage of regeneration, and B mice develop a large number of Ig +-bearing cells.
(11) Alkaline phosphatase activity was elevated in the lymphocytes from T-CLL, cord blood and tonsils and the blast cells from Null-ALL.
(12) Analysis of ldlA cells has identified three classes of mutant alleles at the ldlA locus: null alleles, alleles that code for normally processed receptors that cannot bind LDL, and alleles that code for abnormally processed receptors.
(13) Putative null sup-38 mutations cause maternal-effect lethality which is rescued by a wild-type copy of the locus in the zygote.
(14) Null cells of patients with hypoplastic anemia did not produce erythroid colonies under any culture conditions.
(15) Comparison of simulated versus actual inheritance data demonstrates that the so-called null structural alleles actually produce functional globins.--The genetic controls in Peromyscus may be analogous to those in primates.
(16) A null zone and associated sudden phase-reversal of RSA were observed in stratum lucidum of CA3.
(17) When the stimulus is placed at a position approximately 80 degrees dorsal to the eye axis, there is no response; this area is called the null region.
(18) Northern blot analysis showed that Adh-1 mRNA was synthesized at wild-type levels in immature seeds of the null mutant, but dropped to 25% in mature seeds.
(19) Two tumours were null cell adenomas with PIs less than 0.1 and 0.2%.
(20) Thus this methodology offers the potential to study naturally occurring ADH electromorphs and null alleles independent of enzymatic activity assays.