Viruses
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898, more than 6,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. The study of …
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Laws.Africa · 18 March 2022 English
the medical subject that deals with the study of viruses and the related aspects of general medical microbiology …
Laws.Africa · 4 March 2022 English
bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (ix) Sequencing … fungi, nematodes, insects, mites, viruses and phytoplasmas (x) ELISA tests … (xi) Herbaceous indexing for the detection of viruses (c) Issuing of a phytosanitary certificate …
Laws.Africa · 19 March 2021 English
bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (ix) Sequencing … fungi, nematodes, insects, mites, viruses and phytoplasmas (x) ELISA tests … (xi) Herbaceous indexing for the detection of viruses (c) Issuing of a phytosanitary certificate … bacteria, fungi, nematodes, insects, mites viruses and phytoplasmas (ix) Sequencing for the identification … (xi) Herbaceous indexing for the detection of viruses 2. Quarantine 2.1 Approval …
Laws.Africa · 6 October 2020 English
Sabin strain Type I viruses: 6.0 LgCCID50 OPV Sabin strain Type III viruses, 1b ≥105.8 CCID50 20/30 …
Laws.Africa · 6 July 2020 English
relating to analysis and research of computer viruses; computer virus protection services; technological …
Laws.Africa · 3 July 2020 English
genetic material, including sterile organisms and viruses; “MEC” means the member of the Executive Council …
Laws.Africa · 13 May 2020 English
genetic material, including sterile organisms and viruses; “MEC” means the member of the Executive Council …
Laws.Africa · 14 April 2020 English
0% 0.5% 1% 3% 5% ] Maximum plants infected by viruses 0% 0.25% 0.33% 1% 3% I Maximum plants infected … ilal hltidil 0% Mi»........... i inlcctcd with viruses 36 (VI) Other Criteria and Standards for Field …
Laws.Africa · 20 March 2020 English
password-protected; (d) not be encrypted; (e) not contain viruses; and (f) be at least 300 DPI and above. (2) …
Laws.Africa · 14 February 2020 English
of bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (ix) Sequencing for the identification … bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (x) ELISA tests for identification … (xi) Herbaceous indexing for the detection of viruses R 283,00 per isolation R 201,00 per isolation … of bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (ix) Sequencing for the identification … bacteria, fungi, nematodes, insects, mites, viruses and phytoplasmas (x) ELISA tests for identification …
