What's the difference between heterologous and homologous?

Heterologous


Definition:

  • (a.) Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs.

Example Sentences:

  • (1) Supplemental heterologous bone was used in the first series of 51 cases, autologous bone in the second series of 67 cases, and no supplemental bone in the third series of 68 cases.
  • (2) There was no correlation between anti-TNP-precipitating antibody titer after sensitization and the ability to respond to challenge by hapten-heterologous carrier.
  • (3) Immunized nonvirus-infected animals showed enhancement of pulmonary bactericidal activity for the homologous and heterologous strains in comparison with nonimmunized animals.
  • (4) Homologous, heterologous, and intermediate gel CIE and CRIE clearly demonstrated that DF bodies and DF feces share some common Ags or epitopes, but the two different extracts also were quantitatively different.
  • (5) The desensitization appeared to be heterologous since pretreatment of cells with LTC4 attenuated the responsiveness to LTD4.
  • (6) These results support the idea that P. aeruginosa may be a more permissive host than E. coli for the heterologous expression of genes from gram-negative bacteria.
  • (7) Meningococcal antisera raised against LPS from MGC A, B, and C also provided good protection against endotoxemia from the homologous capsular groups, but it was inconsistent against the heterologous serogroups.
  • (8) Cells express the three chains in a stable fashion, and both autologous (parental) and heterologous (nonparental) H and L chain pairs form and are secreted.
  • (9) The results add support for the general significance of AAV-2 and specifically the rep gene as tools for down-regulating heterologous gene expression.
  • (10) There was heterologous desensitization of the ability of PIA, prostaglandin E1, and nicotinic acid to inhibit cAMP accumulation in the adipocytes from PIA-infused rats; there was an increase in the EC50 of each of these agonists, although maximal inhibition of cAMP accumulation was similar.
  • (11) This antigenic preparation is capable of the formation of immunological memory in mice and protecting them from experimental challenge with pneumococci of homologous and heterologous serotypes.
  • (12) By means of a heterologous porcine radioimmunoassay, serial serum relaxin concentrations were determined in three women throughout pregnancy and into labor.
  • (13) The cleavage sites for the restriction endonucleases BamHI, HindIII, EcoRI, BglII, PvuII, BstEII and PstI were mapped, and the gene organization deduced through heterologous hybridization using different cloned fragments of the rat mitochondrial genome.
  • (14) Eighty-eight percent of subjects receiving CVD 103-HgR mounted a significant (greater than fourfold) rise in Inaba vibriocidal titre while 68% did so for the heterologous Ogawa serotype.
  • (15) A DNA fragment containing rat POMC 5'-flanking sequences from -323 to -34 recapitulated both basal pituitary cell-specific and hormonally stimulated expression in adult mice when fused to a heterologous thymidine kinase promoter.
  • (16) All strains from the same species were strongly reactive with homologous antisera but generally weakly reactive with antisera to the heterologous Mobiluncus spp.
  • (17) Rabbit antisera against ECP from virulent and benign strains, were used in homologous and heterologous crossed IEP.
  • (18) Intramammary vaccination resulted in the production of colostrum which significantly reduced the enterotoxigenic effects of the vaccine strain of E. coli organisms but not that of a heterologous strain.
  • (19) Further corroboration for multiple functional promoters came from heterologous expression of the pfl operon in the obligate aerobe Pseudomonas putida.
  • (20) No reduction in the production of the complement-fixing, antibodies to the heterologous antigen was seen in the animals given ALS.

Homologous


Definition:

  • (a.) Having the same relative position, proportion, value, or structure.
  • (a.) Corresponding in relative position and proportion.
  • (a.) Having the same relative proportion or value, as the two antecedents or the two consequents of a proportion.
  • (a.) Characterized by homology; belonging to the same type or series; corresponding in composition and properties. See Homology, 3.
  • (a.) Being of the same typical structure; having like relations to a fundamental type to structure; as, those bones in the hand of man and the fore foot of a horse are homologous that correspond in their structural relations, that is, in their relations to the type structure of the fore limb in vertebrates.

Example Sentences:

  • (1) Trifluoroacetylated rabbit serum albumin was 5 times more reactive with these antibodies and thus more antigenic than the homologous acetylated moiety confirming the importance of the trifluoromethyl moiety as an epitope in the immunogen in vivo.
  • (2) The ORF2 showed homology with the Escherichia coli regulatory gene ompR, and ORF4 showed homology with E. coli and Rhizobium meliloti regulatory genes fnr and fixK, respectively.
  • (3) Nucleotide sequence analysis of cDNAs for asparagine synthetase (AS) of Pisum sativum has uncovered two distinct AS mRNAs (AS1 and AS2) encoding polypeptides that are highly homologous to the human AS enzyme.
  • (4) In four main regions the conservation varied from 83-91% while in the remaining regions the homology dropped to between 56-62%.
  • (5) It has 61% homology with tRNA(Leu)(anticodon m5CAA) and 63% homology with tRNA(Leu)(anticodon UAG), the two other known yeast tRNAs(Leu).
  • (6) The specified region of the inner E2 core domain was highly homologous to the region of the E2 subunit of pyruvate dehydrogenase and alpha-ketoglutarate dehydrogenase.
  • (7) This novel mechanism of receptor regulation, named transmodulation, should be distinguished from the reduction in total receptor number caused by the homologous ligand (downregulation) and from the change in affinity produced by the binding of agonists or antagonists to the same receptor site.
  • (8) This unusual insertion could affect the interaction of cat CD4 with class II molecules, or with FIV, a feline homolog of HIV.
  • (9) On the basis of primary sequence homology with other known Pseudomonas lipases, a number of putative active site residues located in conserved areas were found.
  • (10) Extensive sequence homologies and other genetic features are shared with the related oncogenic virus, human papillomavirus type 16, especially in the major reading frames.
  • (11) Since the plasmid-cured strains did not contain DNA sequences homologous to plasmid DNA, the gene for the free-inclusion protein must be encoded in the chromosome.
  • (12) Examination of the deduced amino acid sequence revealed an apparent homology to cAMP binding sites in several other proteins.
  • (13) Thus, introduction of arginine in position 5 with a hydrophobic amino acid in position 6 is compatible with high potency in several biological systems and results in compounds with lowered potency to release histamine compared to homologous peptides with tyrosine in position 5 and D-arginine in position 6.
  • (14) This receptor and a growing family of related cytokine receptors share homologous extracellular features, including a well-conserved WSXWS motif.
  • (15) Amino acid analysis indicated a significant number of serine amino acids: N-terminal sequence data demonstrated a high level of homology; and trypsin digestion followed by reversed-phase HPLC indicated the possibility of multiple phosphorylation sites.
  • (16) Homologous insemination in 52 couples during a period of one year yields a conception rate of 38.5%.
  • (17) The region is distinctive in that the sequence is absent from the homologous domain of the erythroid alpha chain and diverges from the normal internal repeat structure observed throughout other spectrins.
  • (18) Surrounding intact ipsilateral structures are more important for the recovery of some of the language functions, such as motor output and phonemic assembly, than homologous contralateral structures.
  • (19) The results show that in both viral DNAs cleavage occurs at the origin and at one additional site which shows striking sequence homology with the origin region.
  • (20) The most striking homology was to yeast SEC7 in the central domain of the gene (57% identical over 466 bp) and also the protein level (42% identical amino acids; 39% conserved amino acids).

Words possibly related to "heterologous"