• Medicine - Mint was originally used as a medicinal herb to treat stomach ache and chest pains. There are several uses in traditional medicine. • Cosmetics - Menthol from mint essential oil (40–90%) is an ingredient of many cosmetics and some perfumes. Menthol and mint essential oil are also used in aromatherapy which may have clinical use to alleviate post-surgery nausea. • Insecticides - Mint oil is also used as an environmentally friendly insecticide for its ability to kill some common pests such as wasps, hornets, ants, and cockroaches. Thank you for your attention!
reverse transcriptase (DNA) ligase DNA polymerase PCR correct use of nucleotide and base sticky ends blunt ends [9] 68. (a) (i) 1 mutation; 2 random / spontaneous / chance / pre-existing; 3 natural selection; 4 drug / insecticide, is, selective agent / selective pressure; 5 resistants have selective advantage; 6 resistants survive / susceptibles die; 7 pass, allele / mutation, to offspring; R gene / resistance 8 allele frequency increases; 9 rapid because, multiplicative phase / short generation time / large 10 numbers offspring / many breeding sites; max 5
cattle (Brown et al., 1998). The bacteria are mainly transmitted by farm works or by direct animal-to-animal contact with fomites, nasal and ocular secretion, but most often by mechanical vectors (Postma et al., 2007). One of the most active vectors are face fly, barn fly and the house fly, who can transport the bacteria to the cattle. The organism may live on the insect for up to 3 days. Therefore, it is recommended to use face dust bags, back rubbers and insecticide-impregnated ear tags (Brown et al., 1998). Some breeds are more susceptible than others. For example, Hereford cattle have noticeably higher risk to get infected compared with other breeds. The reason is about the eyelid pigmentation and decreased antibacterial efficacy of the tear (Postma et al., 2007). Study shows that younger animals were more susceptible to the disease than adults, it is also easily noticeable on the table 1. This research was performed
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