Zona pellucida

My research about stem cells, I will be talking about what a stem cell is. Why are stem cells important from a medical perspective? How are stem cells being used today? Where do scientists get stem cells? Why is so much controversy over the stem cells? How does a zygote develop into a baby? Why a zygote is considered a stem cell? A stem cell is an immature cell that can help reproduce different types of cells throughout the body. There are three types of stem cells that I will be focusing on : adult

Procedures ○ Saline infusion sonography – General explanation □ Office procedure – Indication □ Not generally included in the basic infertility evaluation – Contraindications □ Reproductive tract infection – Interpretation of results □ Saline infusion sonography is performed to evaluate the uterine cavity ○ Hysteroscopy – General explanation □ Office or outpatient procedure □ A flexible or rigid endoscope is used to directly visualize the uterine cavity □ Polyps □ Adhesions □

Regenerative medicine and transplantation is the recent advancement in the field of scientific medical research embarking on the evolvement of embryonic stem cells(ESCs)and reprogrammed human somatic cells called induced pleuri potent stem cells(iPSCs) .Human embryonic stem cells were first derived in 1998 by Thomson et al. and induced pleuri potent stem cells(iPSCs) in 2007(Thai Journal of Obstetrics and GynaecologyApril 2013) The innate proficiency of the human embryonic stem cells to differentiate

“Socioscientific Issues (SSI) are controversial social issues which relate to science. They are ill-structured, open-ended problems which have multiple solutions.” - https://en.wikipedia.org/wiki/Socio-scientific_issues Preimplantation genetic diagnosis (PGD) is a current socio-scientific issue because it is an issue that relates to science as it is a biological procedure and because it is a very controversial issue in today 's society. Some people are against PGD as they believe that an embryo

The company ‘Invivogen’ made a transfectable and simple-to-use plasmid, called psiRNA™, that allows the production of siRNAs within the cells. To transfect means to introduce foreign material into eukaryotic cells. psiRNA is an RNA polymerase III-based plasmid that produces ‘short hairpin’ RNAs (shRNAs). shRNAs are more stable than synthetic siRNAs and since they are continuously expressed within the cells rather than having to be injected into the cytoplasm, this method permits long-lasting silencing

The creation of a new life is a complicated process where many sperm cells travel a long road just so they can sacrifice themselves for that one lucky sperm cell. As you can tell a lot of deaths occur when the sperm cells try to travel to the uterus most of them get lost along the way and don't take the right turns others just aren't lucky to be chosen to be the one who gets to take over the egg. Once fertilization occurs that is when the sperm penetrates the egg. That is called Conception, after

Anatomy of the Female Reproductive System The reproductive role of the female is far more complex than that of a male. Not only must she produce gametes, but her body must prepare to nurture a developing embryo for a period of approximately nine months. Ovaries, the female gonads, are the primary reproductive organs of a female, and like the male testes, ovaries serve a dual purpose: They produce the female gametes (ova) and sex hormones, the estrogens * and progesterone (pro-ges′tĕ-rōn). The

INTRODUCTION: Brumbies are known as the feral horses that inhabit Australia- mostly throughout the Northern Territory, Queensland and scattered centrally in Western Australia. Some small mobs live within Victoria and New South Wales, but none as vast or dense in population. These horses influence the natural habitat in many ways- they reduce vegetation growth, cause soil erosion and impact upon other animals living within the ecosystem. They are seen as pests to national parks, and essentially, this

For instance, the drug Porcine Zona Pellucida (PZP) appears to be very effective. The Humane Society of the United States website presents the article, “Controlling Deer Populations Humanely” which states that PZP sterilizes deer and is a natural protein causing no harm to the animal. The

The technique used in the cloning of Daisy the cow is called Cloning by Nuclear Transfer, or SCNT (Somatic Cell Nuclear Transfer). Daisy was cloned from an initial cow following the use of gene knockdown to silence the expression of the BLG protein. SCNT involves ‘whole organism’ cloning. This technique consists of taking an enucleated oocyte (egg cell) and implanting a donor nucleus from a somatic (body) cell. Somatic cell nuclear transfer can create clones for both reproductive and therapeutic