Ideally, ex-smokers can gradually reduce the amount of nicotine or stop nicotine replacement therapy all at once after theyâve broken the habit of smoking. Even when used for long periods of time, nicotine replacement therapies are far safer than smoking. Quit rates range from 19% to 26%.f youâve tried to quit before and failed because the craving for nicotine was too strong, nicotine replacement therapies may help. Gum, lozenges, and patches are available over-the-counter. Nasal sprays and inhalers require a prescription.
Submit. Â· just now. Report Abuse. Blood is classified into the following types based on the type of antigens present on them and they are; A, B, AB, O and K +ve and-ve is called as Rhesus factor and it comes from Rhesus monkey. Apart from A, B, AB and O, K is a very rare kind of blood group.Watcher Â· 9 years ago. Thumbs up.ubmit. Â· just now. Report Abuse. Blood is classified into the following types based on the type of antigens present on them and they are; A, B, AB, O and K +ve and-ve is called as Rhesus factor and it comes from Rhesus monkey. Apart from A, B, AB and O, K is a very rare kind of blood group.
Some of these antigens are also present on the surface of other types of cells of various tissues. Several of these red blood cell surface antigens can stem from one allele (or an alternative version of a gene) and collectively form a blood group system.lood type (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cells. A blood type (also called a blood group) is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs).