Materials and Methods
UCB CD34+ and HSC isolations
Human CD34+ cells were isolated from umbilical cord blood (UCB) samples collected at the Diakonessenhuis hospital, Leiden after informed consent was given by the mothers. Mononuclear cells were isolated by ficoll (LUMC apothecary) density centrifugation, washed and stored at -80°C until further use. Five to ten UCB samples were selected, thawed and underwent CD34 selection using biotin labelled anti CD34 antibodies and streptavidin coated microbeads (Miltenyi biotech, Bergisch Gladbach, Germany). Isolated
Virus production and transduction procedure
Lentiviral vectors were contructed in 293T cells by transfection of pEnv VSVG, pMD2 GagPol, pREV and the vector backbone pTGZ-B322
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Mice were kept on antibiotics (56 mg/l polymixin B (Bupha, Uitgeest), 70 mg/l ciprofloxacin, 80 mg/l amphotheracin B) in autoclaved acidified drinking water until white blood cells counts were recovered at 4 wks post transplant. Blood samples were obtained at 4,8,12,16 and 21 weeks by lateral tail vein incision. At 16 or 21 weeks, mice were killed by O2/CO2 inhalation and thymus, bone marrow and spleen were isolated. Cell suspensions were made by crushing the bones and passing the remaining cells through a 70µm filter. Spleen and thymus were homogenized by passing them through a 70 µm filter.
Flowcytometry
Erythrocytes in the peripheral blood samples were lysed using an isotonic NH4Cl buffer (LUMC apothecary), after which the cells were stained with the indicated antibodies in PBS/BSA/Sodium azide buffer for 30 minutes on ice. Cells were subsequently sorted using a FACS Aria II (Beckton Dickinson, USA)
Spleen and peripheral blood cells were stained using human CD450 v450, CD19 APCCy7, CD3, CD4, CD8, CD13 and CD33. Peripheral blood cells were sorted into lymphocytes and myeloid cells based on their scatter profile and spleen B cell (human CD45+CD19+) and T cell (CD45+CD3+) populations were sorted. Bone marrow cells were stained using human CD45, CD34,CD38, CD90 and CD49f. HSC (human CD45+CD34+CD38-CD90+CD49f+) and CD34+CD38+ populations were sorted. Thymus cells were stained using human CD45, CD1a, CD34, CD3, CD4 and CD8.
The goal of this experiment is to determine the blood types of the samples given and to learn what interactions occurred to each blood type. Determining an individual’s blood type and how it reacts with Anti A, Anti-B, and Anti Rh serums played a crucial part in this experiment. The researcher concluded that agglutination (clumping) occurred in some of the blood samples. For example, Mr. Smith’s blood reacted with Anti-A and Anti-Rh serums (antibodies) allowing the researcher to determine the blood type is A. Mr. Jones’s blood reacted with Anti-B serum but it did not react to Anti-A or Anti Rh allowing the researcher to believe that the blood type is B. Mr. Green’s blood reacted with all serums and caused a reaction to occur resulting the blood type to be AB positive. Mr. Green’s blood also had a positive marker for Rh factor. However, Ms. Brown’s blood had no reaction at all and the researcher determined if no reaction occurred then the sample had no antigens but proved to have some antibodies, resulting in blood type to be O. The purpose of this experiment is to determine whose blood has type A, B, AB, or O.
To identify red blood cells, basophils, eosinophils, monocytes, lymphocytes, neutrophils, sickle cell anemia and leukemia.
In this paper I will answer some questions about blood and related issues. Some of the questions I will answer are: what is the significance of a lower than normal haematocrit? what is erythropoiesis?why would the level of leukocytes be higher in an individual who has been infected with a parasitic disease. In regions where malaria is endemic, some people build up immune resistance to the malaria pathogen. Which WBCs are responsible for the immune response against pathogens? How do they function?
To test the blood, we first dropped two drops of blood into two spots in a micro-well plate, then we added the appropriate serum to both and mixed with a small stick. One side was labeled A, for the A Anti-Serum, and one was labeled B. If the A blood clotted it meant that the A antigen was found, and likewise with B. If both clotted the blood type was AB, and if neither clotted the blood was type O. Some errors made
Tissue sample presented with large population of B cells, labelled with CD20, in follicles and macrophages labelled with CD68 were also visible in the intrafollicular zone, both are indicative of a humoral immune response.
American Association of Blood Banks (AABB), confirmed that it is possible to determine the Rh phenotypes and the probable genotypes (26 – 28), by determine the presence or absence of the five major Rh antigens (D, C, E, c, and e). Therefore the assortment of antigens detected on a person’s red cells, constitutes the person’s Rh phenotype. (Table 1-4) illustrates the prediction pattern of the probable Rh phenotypes based on the results of tests with the five principal Rh blood typing reagents.
Methodology and Principal Findings: First of all, we made every materials that we need ready. First step was wiped a finger with alcohol, stacked it with lancet. Then, we collected amount of blood in a capillary tube. We left it about one and half hour to collect a plasma with white blood cells. Second step prepared in bottom Petri dish with tap water and filter paper, placed the bent rod
The superRLuc8-scFv probe was designed for detection of human CD4+ cells. Therefore, in order to investigate this ability, CD4+ cells were isolated from human whole blood. For this purpose, peripheral blood was collected in sterile heparinized containers from healthy adult volunteers. All volunteers gave informed written consent, and the studies were approved by the local ethics committee. All blood samples were taken by trained proficients in the healthcare center of the University of Isfahan. Peripheral Blood Mononuclear Cells (PBMCs) which containing CD4-expressing cells were isolated from human blood samples using ficoll density gradient. The isolated cells were harvested, washed and diluted with PBS, and then analyzed by inverted biological
In this report I am going to be investigating the use of stem cells in the bone marrow transplant and find out how effective they are when treating patients with Leukimia.
An 18-year-old male college student comes to the student care center complaining of severe fatigue for the past 1–2 weeks and a sore throat for several days. On exam he has significant lymphadenopathy and a temperature of 38.1ºC (100.5º F). The patient’s serum agglutinates horse red blood cells. His peripheral blood smear is likely to show which of the following?
Blood is composed of three types of elements such as red blood cells (erythrocytes) which carry oxygen; white blood cells (leukocytes), defenders against infections; and platelets which are for clotting. There are five types of leukocytes, some with granules (granulocytes), and some without granules (agranulocytes). There are three types of white blood cell with granulocytes: Neutrophils, Eosinophils, and Basophils. Neutrophils engulf bacteria and fungi. Eosinophils target parasites and play an important role in allergy and asthma. Basophils release histamine in response to inflammation. Agranulocytes include lymphocytes and
Discussion The outcome of the blood samples reacting to the serums was supportive of the hypothesis. Each unknown blood sample was exposed to anti-A, anti-B and anti-Rh serum. It was predicted that depending on which serum the blood sample reacted to that a specific blood type could be deduced. The agglutination of the red blood cell occurs due to the matching antigens and antibodies reacting to each other.
To begin this portion of the total blood cell count a finger prick was completed. In order to do this gloves were put on the participant’s hands and the finger being used to prick was thoroughly cleaned with an alcohol pad (allowed to air dry). Next a sterile lancet was used to stick the cleaned finger until blood appeared. Holding the hand down, two capillary tubes were filled at least two thirds of the way full with the participant’s blood. After the capillary tubes were filled they were sealed by pressing the clean end into the clay pad. Both capillary tubes were then placed onto the centrifuge for three minutes to spin, (which separated the elements of blood). The group then used a hematocrit card reader to measure the percentage of red blood cells. To do this the bottom of the capillary tube was placed on the scale at 0 and the top of the plasma at 100. The value at the top of the red blood cell portion indicates the percentage of whole red blood cells. Materials for collecting the white blood cell differential information included three clean glass slides, a sharp, wrights stain, a buffer for wrights stain, bibulous paper, a stacking rack, and a microscope. This experiment also requires a finger prick, if more blood was needed then it was performed again as previously stated. A small drop of blood was placed on two of the three clean slides. The third clean slide was used to smear the blood on each of the slides containing the drop. The slides were to be held flat while the third slide was used to push the blood down the slide in a thin layer. After a thin blood smear was created on both slides the blood was allowed to air dry for the staining process. Following the slides drying, they were placed on a stacking rack with the blood
Cytogenic analysis – Microscopic examination of lymphocytes to look for structural changes or changes in number of chromosomes.
The spleen has different roles to play in supporting the body and immune system. One is filtering the other is cleaning. It has two main parts, red and white pulp. The white pulp is where a portion of white blood cells are produced and held. The red pulp acts as if it is a filter, removing old or damaged blood cells, from the body. Providence, R.I. [Brown University] — "A key function of the spleen, a fist-sized organ located just behind the stomach, is