Data becomes reliable when it is replicable and gives evidence without <u>errors</u><u>.</u>
(by Benjemin)
New techniques to produce cells with the characteristics of embryonic stem cells include Parthenogenesis, retroviral transduction of transcription factor genes into adult skin cells (iPS), and somatic cell nuclear transfer (SCNT).
<h3>What is
embryonic stem cells?</h3>
- Pluripotent stem cells called embryonic stem cells are produced from the inner cell mass of a blastocyst, a preimplantation embryo in its early stages.
- Four to five days after fertilization, human embryos reach the blastocyst stage, consisting of 50 to 150 cells.
- Embryonic stem cells (ESCs) are stem cells that come from an embryo's core mass of undifferentiated cells.
- In laboratories, typically fertility clinics, 4- to 6-day-old embryos are used to produce human embryonic stem cells.
- The core embryonic cells are taken out and put in a dish with the nutrients they require to thrive.
- Theoretically, embryonic stem cells are capable of mass-producing any kind of tissue.
- These cells are used by researchers to investigate disease and development in the hopes of developing therapies.
- A single embryo's two or three dozen cells can produce millions of embryonic stem cells in about six months.
Learn more about embryonic stem cell here:
brainly.com/question/18243320
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Answer:
nourish the placenta
Explanation:
The hormone called human placental lactogen (hPL) is a hormone secreted by the placenta, which functions to supply nutrients and oxygen to the growing fetus in the womb.
The human placental lactogen is produced to help in the efficient use of ingested food substances in the production of energy (metabolism). This indirectly helps to nourish the placenta because if the mother efficiently converts food into nutrients, the placenta is also adequately nourished.
Answer:
The correct answer is - option D. adrenergic receptor.
Explanation:
Adrenergic receptors are present on or in the effector cells that are specific molecular structures. The adrenergic receptors are glycoproteins that are present on the cell surface that binds and recognize with the various hormones or drugs such as norepinephrine or epinephrine and others.
These are the receptors that are sympathetic tissue receptors that get drugs or hormones released from the sympathetic nerve endings and the adrenal glands.
Thus, the correct answer is - option D. adrenergic receptors.
