Answer:
Sperm washing is the process in which individual sperms are separated from the semen. Washed sperm is used in artificial insemination using the intrauterine insemination (IUI) technique and in in vitro fertilization (IVF). It may also be used to decrease the risk of HIV transmission by an HIV-positive male, in which case the washed sperm is injected into a female using an artificial insemination technique.
Sperm washing involves removing any mucus and non-motile sperm in the semen to improve the chances of fertilization and to extract certain disease-carrying material in the semen. Sperm washing is a standard procedure in infertility treatment.
Explanation:
Sperm washing takes place in a laboratory following sperm donation.
Sperm may be washed by density gradient centrifugation or by a "direct swim-up" technique that does not involve centrifugation. In normal semen samples, centrifugation causes no more DNA damage to spermatozoa than a direct swim-up technique.[1]
Washed sperm is concentrated in Hams F10 media without L-glutamine, warmed to 37 °C (99 °F).[2] A chemical known as a cryoprotectant is added to the sperm to aid the freezing and thawing process.[3] Further chemicals may be added which separate the most active sperm in the sample, as well as extend or dilute the sample so that vials for a number of inseminations are produced.
Answer:
Spitting blood or bloodstained sputum from the lungs or bronchial tubes is a symptom of many diseases, more symptoms need to be revealed for a single disease to be identified. However, diseases that have the symptom of spitting blood or bloodstained sputum from the lungs or bronchial tubes are listed below.
Explanation:
Spitting blood with sputum (cough) and coughing means that the bleeding comes from the lungs or airways, which may indicate any of the following diseases:
- Pulmonary infections, such as acute bronchitis or chronic bronchitis;
- Pulmonary Tuberculosis;
- pulmonary infarction (death of part of the lung tissue caused by obstruction of some artery);
- Bronchiectasis (abnormal dilation of the pulmonary bronchi);
- Venocapillary hypertension (increased blood pressure in the pulmonary veins that can cause small vessels to rupture);
- Left ventricular failure of the heart;
- Mitral valve stenosis (narrowing) of the heart.
Spitting blood without a cough may be a sign of a nose or throat injury. For example, if the throat is inflamed or infected, there may be minor bleedings due to minor mucosal lesions, and when the discharge comes out, it is accompanied by blood.
I don’t quite understand the question? But LGBTQ means
Lesbian
Gay
Bisexual
Trans (switching genders)
And Queer
And anyone can be any of these, Men. Women, “them” and other personal identities
Answer:
B
Explanation:
A. its never good to ignore what your stressed about
C. If your seriously to the point where it effects you mental or physical health then maybe think about this but if you know your stressed about something then just take time of to come up with a better plan that will allow you to get what you need done but not burn out.
D. trying to forget what your stressed about never works because you will stress even more when it get worse or harder. By forgetting it your not helping the problem your just going to become stressed again
i chose B because i have GCSE coming up and i am also stress and B seemed like the best option for me to
Toothpaste<span> is used to promote oral hygiene: it serves as an abrasive that aids in removing the </span>dental<span> plaque and food from the </span>teeth<span>, assists in suppressing halitosis, and delivers active ingredients (most commonly fluoride) to </span>help<span> prevent </span>toothdecay (dental<span> caries) and gum disease (gingivitis).</span>
