Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.The number of chromosomes in a single set is represented as n, which is also called the haploid number.n humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number.
1 For example, at the Michigan State University Travel Clinic, the cost of a rabies vaccination is at least $35 to $95 for a consultation, depending on how long it lasts; $20 for shot administration ($15 for each additional shot) and $200 each for the three required shots for a total of at least $685.
1 And at Baylor Travel Medicine in Texas, an initial consultation costs $85 to $150, depending on the complexity of the patient's travel itinerary and medical history, and follow-up appointments to administer the shots cost $25 to $85 each. 2  A Hepatitis B vaccination costs $70 per shot for a total of at least $370. Protection begins four to six weeks after the first shot. 2  The CDC has an information sheet about the Hepatitis A vaccine. 3  The Hepatitis B and combined Hepatitis A/B vaccines usually are given in a series of three shots, with the second shot a month after the first, and the third shot six months after the first.