Species differences in activating and inactivating enzymes related to in vitro mutagenicity mediated by tissue preparations from these species.
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Animals↗
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Restriction and modification in Bacillus species: genetic transformation of bacteria with DNA from different species, part I.
Host specific restriction was detected in 13 Bacillus strains, when 63 strains of Bacillus subtilis and 15 other Bacillus strains were tested with phage phi 105C. These 13 strains were classified into 8 groups (M,H,C,N,E,F,G,P) by the type of restriction. M-type strains (B. subtilis Marburg 168, its derivatives, and two other strains) showed relatively weak restriction, restricting phi 105C from other groups of Bacillus by ratios of 10(-1) to 10(-3). Strains of groups H,C,N,E,F,G, and P restricted phi 105C from other groups by ratios of 10(-2) to 10(-8). It was confirmed with some of the strains that type-specific modification was endowed only by the last host. Furthermore, we isolated one restriction deficient mutant of B. subtilis Marburg 168-YS11, which had also lost its modification phenotype.
Bacillus↗
[Experimental xenotransplantation in distantly related species systems. Effect of chronic immunization of dogs (recipient) with total liver homogenates of sheep (donor) on the hyperacute rejection of foreign species organs].
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Animals↗
How relevant are the concepts of species diversity and species richness?
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Animals↗
Revision of taxonomic criteria for species demarcation in the family Geminiviridae, and an updated list of begomovirus species.
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Geminiviridae↗
Intestinal disaccharidase activity in a monotreme and eight species of marsupials (with an added note on the disaccharidases of five species of sea birds).
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Aging↗
Genetic polymorphisms of esterase isozymes of the plasma in two species of doves, their hybrids and backcross hybrids, and in other species of columbidae.
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Alleles↗
Transmission of sex cells of one species through the body of a second species in the genus Xenopus. I. Intraspecific matings.
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Animals↗
Species-specific aggregation factor in sponges. IV. Inactivation of the aggregation factor by mucoid cells from another species.
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Animals↗
Species-specific cell cohesion in cellular slime molds. Demonstration by several quantitative assays and with multiple species.
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Cell Membrane↗
The J. F. A. Sprent Prize of the Australian Society for Parasitology. Differences in the life cycles of two species of reptile tick: implications for species distributions.
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Animals↗
A comparison of the X chromosomes of the ovarian nurse cells of species B and species C of the Anopheles gambiae complex.
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Animals↗
Presence of methylenetetrahydrofolate reductase of American Leishmania species and its absence from Trypanosoma species.
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5,10-Methylenetetrahydrofolate Reductase (FADH2)↗
Species variations in the metabolism of liposoluble organochlorine compounds by hepatic microsomal monooxygenase: comparative kinetics in four vertebrate species.
Liposoluble organochlorine compounds were used as substrates in a kinetic study of the hepatic microsomal monooxygenases of the male rat, feral pigeon (Columbia livia), frog (Rana pipiens) and rainbow trout (Salmo gairdnerii). Substrate concentrations were taken down to environmentally realistic levels. Lineweaver-Burk plots gave straight lines for both aldrin (HHDN) and the dieldrin analogue HCE. For both substrates activities followed the order rat greater than feral pigeon greater than trout over the entire concentration range. The metabolism of PCB isomers in microsomes from these uninduced animals was very slow. These results give evidence of cytochrome P-450 forms which can metabolize organochlorine compounds at low substrate concentrations.
Animals↗
Effectiveness of rhizobia from wild species of Arachis on the cultivated species, A. hypogaea and their physiological characteristics.
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Arachis↗
Analysis of the 18S rRNA genes of Sarcocystis species suggests that the morphologically similar organisms from cattle and water buffalo should be considered the same species.
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Animals↗
An attempt to estimate the effective size of the ancestral species common to two extant species from which homologous genes are sequenced.
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Animals↗
Design of species- or isozyme-specific enzyme inhibitors. 3. Species and isozymic differences between mammalian and bacterial adenylate kinases in substituent tolerance in an enzyme-substrate complex.
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Adenosine Triphosphate↗