Search for Plaques

In vitro Antiviral Activity of Nigella sativa against Peste des Petits Ruminants (PPR) Virus

Kiran Aqil¹, Muti-ur-Rehman Khan², Asim Aslam², Aqeel Javeed⁵, Rizwan Qayyum¹, Farooq Yousaf,¹ Farkhanda Yasmeen¹, Muhammad Luqman Sohail³ and Sajid Umar^4,*

...ignificantly reduced the plaques count as compared with the control negative (P<0.05) in all the tested modes of action. The current experiment revealed that the alcoholic extracts of N. sativa (50 µg/ml) could increase the viability of infected cells, and curtail the cytopathic effects of PPRV. N. sativa seed extracts should be explored in field conditions for the control of PPR.

...

Stability of Salmonella typhimurium Bacteriophage to Some Physical and Chemical Factors

Abeer A. Feisall; B.A. Othman2; Kh.A. El-Dougdoug2 and H.S. Shalaby1

...v>

circular single plaques, without halo of 3 mm in diameter. Electron microscopy of

Salmonella bacteriophage particles (St-1) indicated that the phage particle has an

isometric head of about 69.6 nm in diameter and non contractile tail of 243.5 nm in

length and 17.4 nm in width. The Salmonella bacteriophage (St-1) has a narrow

host range since, it was infectious to Salmonella typhimrium ATCC25566 and S.

Abundance and Variation of Virulence of Rhizobiophages Isolated from the Rhizosphere of Some Legume Plants in Egypt

Ramy A. Qabel1; Tarek F. El-Arabi2; Adel A. Shoukry1; Hassan H. Elsebaay1; Abdel-Aziz F. El-Hamahmy1

... as group V showed clear plaques and were able to infect many of Rhizobium species and strains. The other group of phages was less virulent and showed turbid plaques implied as group L. This was also determined by one-step growth experiment. It was found that rhizobiophage (V) group had the attachment and latent period after 30 min and burst size of 28. On the other hand, rhizobiophages (L) group had the attachment and laten...

Isolation of Pseudomonas aeruginosa Phages from Wastewaters

Stephen Chijioke Emencheta¹, Chinelo Charity Eze¹, Anthony Amaechi Attama², Damian Ejike Agbo¹ and Ebele Benedette Onuigbo¹*

...an 0.8. The formation of plaques (clear zone) on the lawn of Pseudomonas spp confirmed lytic action. The bacteriophage showed plaques on Pseudomonas sp. isolated from other sites also. The isolation of Pseudomonas aeruginosaphages from residential wastewaters is a promising molecular tool in combating the global antimicrobial resistance threat.

...

Isolation of Escherichia Coli Phages from Waste Waters

Stephen Chijioke Emencheta¹, Anthony Amaechi Attama², Ezinwanne Nneoma Ezeibe¹, Adaora Angela Agubata¹ and Ebele Benedette Onuigbo¹*

...e 0.33. The formation of plaques (clear zones of inhibition) on the lawn of the plates of Escherichia coli was confirmed. The isolation of Escherichia coli phages from residential and farm wastewaters is a promising molecular tool for E. coli tracking in the environment.

...

Effect of Topical application of Lyophilized Xenogenous Mesenchymal Stem Cell-Derived Extracellular Vesicles on Central and Peripheral Corneal Ulcers Healing in Rabbits

Mohamed M. Bahr1, Mohamed S. Amer1*, Khaled Abo-EL-Sooud2, Shaimaa M. Kamel3, Marwa A. Fouly4, Ahmed N. Abdallah5, Ashraf A. Shamaa1, Omar S. El-Tookhy1

...rangements of epithelial plaques and presented some abnormalities as stromal fibrosis and sub-epithelial cyst formation. Histopathology in both treated groups showed the development of a complete layer of epithelium within 1week which increased in rows at 2nd and 3rd weeks of treatment and the stromal edema decreased with time unlike control groups that showed weak fragmented epithelium development, sub-epithelial hemorrhage and vascularization. These findings...

Detection of xanthomonas vesicatoria Phages in Infected Tomato Plants

Eisa*, Nawal A.; Abd El-Ghafar **, N. Y. Abd EL-Mageed*, M.H.; Mohamed* , F.G. and Hasan*, Eman O.

...que. The phages produced plaques (4-5mm, diameter) with a distinct translucent spreading halo. Presumptive phage particles associated with X vesicatoria were observed by Transmission Electron Microscope (TEM). Particle size and morphology of each phage isolate were examined by electron microscopy. The obtained results indicated that, the isolated phages were of the head and tail types. Four phages were detected and designated A,B,C and D, their head diameters ...

Isolation and Characterization of a Pseudomonas aeruginosa Bacteriophage from Agriculture Drain Water

Amina A. II. and M.K. Amin

...ity of phage PAI to form plaques with strain PAOI was examined. Two kinds of plaques (turbid and clear) have been observed. The average number of turbid plaques was 2.52 x 109 pfu/ml whereas of clear plaques was 9.96 x 107 pfu/n) l. The phage was able to lysis 13 out of 20 strains of Pseudomonas aeruginosa, this result shows that phage PAI has a broad ho...