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Is there a exchange of cells between the mother and the fetus through the placenta?
Under normal conditions, there is not a passage of cells across the placenta during gestation. The placenta has a smooth mucosa dividing the richly vascularized region in contact with the mother's endometrium from the umbilical cord in contact with the fetal blood. This barrier is called as placental barrier. Although permeable to some substances (selective permeability) the placental barrier forbids the passage of cells.
Q. What is the anemia? What are the four major types of anemia? Anemia is low concentration of hemoglobin in the blood, the four major kind of anemia are the nutrient-deficienc
Which one of the following does not follow the central dogma of molecular biology? 1. Pea 2. Mucor 3. Chlamydomonas 4. HIV HIV is the central dogma of molecular bi
Significance of Lingual nerve and artery Because the nerve lies medial to the retromolar pad, incisions in this region should remain lateral to the pad and mucosal reflection s
Define working of Body surface in excretion of zinc in human? Loss of zinc occurs due to the exfoliation of skin and sweating (0.7 -1.0 mg/day). Another route of zinc loss is h
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Define Miscibility in binary liquid systems? When two different pure liquids are unable to mix in all proportions, they are said to be partially miscible. When these liquids ar
Agrostology : This is related to all types of grasses. Agrostology is sometimes called as graminology. Agrostology is the scientific study of grasses. It typically encompasses the
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A leaf is detached from a tree and tested with iodine. The leaf turns dark blue. (a) What does this result tell you? (b) Why is this result not sufficient e
Classification of the phylum protozoa
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