Wyniki wyszukiwania

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

The tandem scanning reflected light microscope

100%

Petran M., Hadravsky M., Boyde A.

International Agrophysics

|

1995

|

tom 09

|

nr 4

2

Application of scanning electron microscopy and microanalysis [SEM] in the study of certain processes in Mollic Gleysols

75%

Drozd J., Licznar M., Licznar S.

International Agrophysics

|

1994

|

tom 08

|

nr 1

3

Light microscopic visualization of semicarbazide-sensitive amine oxidase [benzylamine oxidase] using a cerium method

63%

Nakos G., Gossrau R.

Folia Histochemica et Cytobiologica

|

1994

|

tom 32

|

nr 1

4

Microscopical observations of Sphaerellopsis filum, a parasite of Puccinia recondita

63%

Plachecka A.

Acta Agrobotanica

|

2005

|

tom 58

|

nr 1

Sphaerellopsis filum is a well-known parasite associated with many species of rust fungi. It is of frequent occurrence as parasite of cereal rusts: Puccinia recondita, P. coronata, P. graminis, P hordei and P. striiformis. Uredial sori of Puccinia recondita f.sp. tritici infected with Sphaerellopsis filum were examined by light and scanning microscope to determine morphology of hyperparasite as well as the parasite-hyperparasite contact. The microscopical examination of infected uredinia clearly showed the intimate connection of S. filum with its rust host.

5

Identification of garlic viruses by immunoelectron microscopy [IEM] decoration technique

63%

Szyndel M. S., Lipinski Z.

Phytopathologia Polonica

|

1994

|

tom 08

6

Morphological enumeration of resting spores in sporosori of the plant pathogen Spongospora subterranea

51%

Falloon R. E., Merz U., Lister R. A., Wallace A. R., Hayes S. P.

Acta Protozoologica

|

2011

|

tom 50

|

nr 2

7

Metabolic mapping by enzyme histochemistry in living animals, tissues and cells

51%

Van Noorden C. J. F.

Journal of Physiology and Pharmacology. Supplement

|

2009

|

tom 60

|

nr 4

8

Low prevalence of haemosporidian parasites in the introduced house sparrow [Passer domesticus] in Brazil

51%

Lima M. R., Simpson L., Fecchio A., Kyaw C. M.

Acta Parasitologica

|

2010

|

tom 55

|

nr 4

297-303

Species that are introduced to novel environments can lose their native pathogens and parasites during the process of introduction. The escape from the negative effects associated with these natural enemies is commonly employed as an explanation for the success and expansion of invasive species, which is termed the enemy release hypothesis (ERH). In this study, nested PCR techniques and microscopy were used to determine the prevalence and intensity (respectively) of Plasmodium spp. and Haemoproteus spp. in introduced house sparrows and native urban birds of central Brazil. Generalized linear mixed models were fitted by Laplace approximation considering a binomial error distribution and logit link function. Location and species were considered as random effects and species categorization (native or non-indigenous) as fixed effects. We found that native birds from Brazil presented significantly higher parasite prevalence in accordance with the ERH. We also compared our data with the literature, and found that house sparrows native to Europe exhibited significantly higher parasite prevalence than introduced house sparrows from Brazil, which also supports the ERH. Therefore, it is possible that house sparrows from Brazil might have experienced a parasitic release during the process of introduction, which might also be related to a demographic release (e.g. release from the negative effects of parasites on host population dynamics).

9

Apicomplexa primers amplify Proteromonas (Stramenopiles, Slopalinida, Proteromonadidae) in tissue and blood samples from lizards

51%

Maia J. P. M. C., Gomez-Diaz E., Harris D. J.

Acta Parasitologica

|

2012

|

tom 57

|

nr 4

Microscopy has traditionally been the most common method in parasitological studies, but in recent years molecular screening has become increasingly frequent to detect protozoan parasites in a wide range of vertebrate hosts and vectors. During routine molecular screening of apicomplexan parasites in reptiles using the 18S rRNA gene, we have amplified and sequenced Proteromonas parasites from three lizard hosts (less than 1% prevalence). We conducted phylogenetic analysis to confirm the taxonomic position and infer their relationships with other stramenopiles. Although our phylogeny is limited due to scarcity of molecular data on these protists, our results confirm they are closely related to Proteromonas lacertae. Our findings show that unexpected parasites can be amplified from host samples (blood and tissue) using general procedures to detect hemoparasites, and stress that positive PCR amplifications alone should not be considered as definitive proof of infection by particular parasites. Further validation by sequence confirmation and thorough phylogenetic assessment will not only avoid false positives and biased prevalence estimates but also provide valuable information on the biodiversity and phylogenetic relationships of other parasitic organisms. More generally, our results illustrate the perils of general diagnosis protocols in parasitological studies and the need of cross-validation procedures.

10

Secretory structures of subterranean organs of some species of the Cardueae, and their diagnostic value

51%

Fritz E., Saukel J.

Acta Biologica Cracoviensia. Series Botanica

|

2011

|

tom 53

|

nr 1

Secretory ducts and cavities of roots and rhizomes are typical features of the Cardueae tribe in the Asteraceae family. We used light microscopy to analyze the anatomy of the subterranean organs of 21 species of 13 genera of the Cardueae, with particular attention to the secretory system, interpreted in taxonomic terms. The anatomy of secretory ducts varied greatly. A new measurement quotient, C1 [length of epithelial cells (longitudinal section)] and C2 [length of adjacent cells (longitudinal section)] was established. Different types of ducts are described based on type of development and the size ratios among epithelial cells. Detailed anatomical descriptions of the ducts are given, together with their occurrence in particular taxa. The simultaneous presence of various secretory ducts within a single species and their spatial position relative to other prominent anatomical features provide valuable characters for discriminating the studied Cardueae species. These analyses are of particular interest for identification of herbal drugs as, besides chemical analytical techniques such as chromatographic fingerprinting, light microscopy is a common method for purity controls and thus required in official pharmacopeias.

11

A light microscopic and ultrastructural study of Gurleya legeri sensu Mackinnon [1911] - with establishment of the new species Gurleya dorisae sp.n. [Microspora, Gurleyidae]

51%

Larsson J. I. R.

Acta Protozoologica

|

1995

|

tom 34

|

nr 1

12

Presence of processed animal protein in feedingstuffs for ruminants

51%

Kwiatek K., Weiner A., Przenioslo M.

Bulletin of the Veterinary Institute in Puławy

|

2003

|

tom 47

|

nr 2

13

Kapacytacja plemnikow ogiera. Czesc II. Ocena akrosomu plemnikow ogiera przed i po kapacytacji in vitro w mikroskopie swietlnym i fluorescencyjnym

45%

Slonina D., Okolski A., Banasinska-Baranska K.

Acta Agraria et Silvestria. Series Zootechnica

|

1993

|

tom 31

83-88

14

Easy, fast, cheap, informative, and pretty – staining of plant sections with Mayer’s mucicarmine and Lugol’s reagent

45%

Lotocka B.

Acta Agrobotanica

|

2023

|

tom 76

Ograniczanie wyników

The tandem scanning reflected light microscope

Application of scanning electron microscopy and microanalysis [SEM] in the study of certain processes in Mollic Gleysols

Light microscopic visualization of semicarbazide-sensitive amine oxidase [benzylamine oxidase] using a cerium method

Microscopical observations of Sphaerellopsis filum, a parasite of Puccinia recondita

Identification of garlic viruses by immunoelectron microscopy [IEM] decoration technique

Morphological enumeration of resting spores in sporosori of the plant pathogen Spongospora subterranea

Metabolic mapping by enzyme histochemistry in living animals, tissues and cells

Low prevalence of haemosporidian parasites in the introduced house sparrow [Passer domesticus] in Brazil

Apicomplexa primers amplify Proteromonas (Stramenopiles, Slopalinida, Proteromonadidae) in tissue and blood samples from lizards

Secretory structures of subterranean organs of some species of the Cardueae, and their diagnostic value

A light microscopic and ultrastructural study of Gurleya legeri sensu Mackinnon [1911] - with establishment of the new species Gurleya dorisae sp.n. [Microspora, Gurleyidae]

Presence of processed animal protein in feedingstuffs for ruminants

Kapacytacja plemnikow ogiera. Czesc II. Ocena akrosomu plemnikow ogiera przed i po kapacytacji in vitro w mikroskopie swietlnym i fluorescencyjnym

Easy, fast, cheap, informative, and pretty – staining of plant sections with Mayer’s mucicarmine and Lugol’s reagent