In the course of passaging of Coxiella burnetii (C.b.) in Alveonasus lahorensis ticks, the haemocytes contained cell forms with electrondense cytoplasm, intracytoplasmic lamellar membranes, and a peculiar limiting membrane--25 to 30 nm thick "envelope complex". Similar small forms occurred when C.b. had been cultured in the yolk sack of chick embryos. The dense forms of C.b. were similar to those of Rickettsiella cells. Dense forms (elementary bodies) surrounded by an "envelope complex" were found also in some chlamydiae cultured in yolk sacs of chick embryos.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Effect of fibrillation on the film-forming properties of soy protein isolate: Relationship between protein structural changes and the film-forming properties.
Food Chem
December 2024
College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, China. Electronic address:
Protein fibrillation has great potential for enhancing the emulsification, foaming, and gelling properties of proteins. However, its effects on protein film-forming properties are less well understood. In this study, soy protein isolate (SPI) was subjected to fibrillation at pH 2.
View Article and Find Full Text PDFBreaking the Trade-Off Between Electrical Conductivity and Mechanical Strength in Bulk Graphite Using Metal-Organic Framework-Derived Precursors.
Adv Sci (Weinh)
January 2025
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
High-performance bulk graphite (HPBG) that simultaneously integrates superior electrical conductivity and excellent strength is in high demand, yet it remains critical and challenging. Herein a novel approach is introduced utilizing MOF-derived nanoporous metal/carbon composites as precursors to circumvent this traditional trade-off. The resulting bulk graphite, composed of densely packed multilayered graphene sheets functionalized with diverse cobalt forms (nanoparticles, single atoms, and clusters), exhibits unprecedented electrical conductivity in all directions (in-plane: 7311 S cm⁻¹, out-of-plane: 5541 S cm⁻¹) and excellent mechanical strength (flexural: 101.
View Article and Find Full Text PDFBackground: Neuropathological tau tangles in Alzerheimer's disease (AD) have been roughly characterized into pre-tangles, mature tangles and ghost tangles. However, to date, their maturation in the human brain is poorly understood. Here, we aimed to define the structure and composition of tangle maturation stages in the AD brain using correlative light and electron microscopy (CLEM).
View Article and Find Full Text PDFHeterogeneous amylopectin delays short-term retrogradation via fabricating a binary gel network within steamed cold noodles.
Food Res Int
January 2025
Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization, Ministry of Agriculture and Rural Affairs, Anhui Engineering Research Center for High Value Utilization of Characteristic Agricultural Products, College of Food and Nutrition, Anhui Agricultural University, Hefei, China. Electronic address:
This study aimed to investigate the influence of heterogeneous amylopectin (waxy corn starch, WCS) on the retrogradation of wheat starch (WS), hoping to provide a new idea for alleviating the retrogradation of steamed cold noodles. The chain length distribution data confirmed the formation of a binary gel network resulting from the heterogeneous amylopectin structure between WCS and WS. With the increase of WCS concentration, the modulus and setback value of WS-WCS binary gel decreased, which was attributed to the newly built network structure hindering the aggregation of WS molecules.
View Article and Find Full Text PDFLand Use Change Disrupts the Network Complexity and Stability of Soil Microbial Carbon Cycling Genes Across an Agricultural Mosaic Landscape.
Microb Ecol
January 2025
Bioprotection Aotearoa, Lincoln University, P.O. Box 85084, Lincoln, 7647, New Zealand.
To understand the effects of agricultural land use change and management on soil carbon (C) cycling, it is crucial to examine how these changes can influence microbial soil C cycling. Network analysis can offer insights into the structure, complexity, and stability of the soil microbiome in response to environmental disturbances, including land use change. Using SparCC-based co-occurrence networks, we studied how land use change impacts the connectivity, complexity, and stability of microbial C-cycling gene networks across an agricultural mosaic landscape in Canterbury, New Zealand.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!