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3 days ago · Additionally, evaluating the morphology and Gram stain of the bacteria aids in determining whether it is an isolated or polymicrobial culture, and ultimately, definitive identification of the ...
3 days ago · Methicillin-resistant Staphylococcus aureus (MRSA) was selected as the representative of Gram-positive bacteria, and P. a., Acinetobacter baumannii (A. b.), Escherichia coli (E. coli), Klebsiella pneumoniae (K. p.) as the representative of Gram-negative bacteria. For selective check, 5 μM of NBS-DPA-Zn or NBS-2DPA-Zn were mixed with various ...
2 days ago · Based on colonial morphology on different culture plates, two or more colonies were further characterized by first subculturing on specific media, followed by gram staining. The isolates were then identified by VITEK 2 using Gram negative (GN) and Gram-positive (GP) identification cards (ID).
4 days ago · Cell shape, nature of multicell aggregates, motility, formation of spores, and reaction to the Gram stain are important. Those morphological features, including the shape and colour of bacterial colonies, are not always constant and can be influenced by environmental conditions.
1 day ago · Many Gram-negative bacteria use type Ⅲ secretion system (T3SS) to inject effector proteins and subvert host signaling pathways, facilitating the growth, survival, and virulence. Notably, some bacteria harbor multiple distinct T3SSs with different functions. An extraordinary T3SS, the Escherichia coli Type III Secretion System 2 (ETT2), is widespread among Escherichia coli (E. coli) strains ...
4 days ago · The Gram stain is a differential staining technique used to classify & categorize bacteria into two major groups: Gram positive and Gram negative, based on the differences of the chemical and physical properties of the cell wall.
2 days ago · Escherichia coli O157:H7 and E. coli O169:H41 have been reported to be highly pathogenic (Yang et al., 2017). Further study has observed that two strains belonged to enterohemorrhagic E. coli and caused bloody diarrhea and the potentially fatal hemolytic uremic syndrome ( Razmi et al., 2020 ).
