What are the similarities and differences in germ cell development and function across different animal species (e.g., invertebrates, fish, amphibians, reptiles, birds, mammals)?

Dec 17, 2024 ... AFP, β-hCG, or both are elevated in approximately 85% of extragonadal nonseminomatous germ cell tumors. Small increases in serum β-hCG can be ... Germ cell tumors (GCTs) are made up of these underdeveloped cells. These tumors are rare. They may be cancer (malignant) or not cancer (benign). What is a Yolk Sac or Germ Cell Tumor? A yolk sac tumor is a rare, malignant tumor of cells that line the yolk sac of the embryo. These cells normally become ... Benign ovarian germ cell tumors (OGCT) are called mature cystic teratomas and are the most common type of OGCT. These are either observed or removed with ... The most common CNS germ cell tumour is the germinoma. The other germ cell tumours, broadly referred to as non-geminomatous germ cell tumours are embryonal ... Nov 2, 2022 ... The most common benign form of ovarian germ cell tumor is a mature teratoma. Often called a dermoid cyst, teratomas sometimes contain a mixture ... Sep 27, 2023 ... Frequent in seminiferous tubules of testicles involved by postpubertal germ cell tumors and sometimes represents the only residual manifestation. Germ cells are used to produce human reproductive sex cells called gametes. Germ cells can either be diploid, or haploid (containing half the diploid chromosome ... Ovaries of reproductive-age women, like adult mice, possess rare mitotically-active germ cells that can be propagated in vitro as well as generate oocytes in ... Germ cell tumors (GCTs) are made up of these underdeveloped cells. These tumors are rare. They may be cancer (malignant) or not cancer (benign).