What are the unique adaptations of germ cells in species with external fertilization?

Yolk sac tumors are the most common malignant testicular and ovarian tumors in children. Most yolk sac tumors will require surgery and chemotherapy, regardless ... Apr 19, 2019 ... histologic subtypes share a common cell of origin. For example: – “Germ cell theory”: Primordial germ cells mismigrate during embryonic ... Germline is the sequence (lineage) of germ cells in a mature or developing organism that contains the genetic material that will be passed on to an offspring. Germ cells are highly specialized cells with the unique ability of forming a new organism. This critical cell lineage is established very early on ... 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 ... Jun 3, 2024 ... Germ cell exfoliation has been described as a predominant finding following administration of phthalate esters and microtubule inhibitors such as colchicine ... Germ cells are forever. Cell. 2008 Feb 22;132(4):559-62. doi: 10.1016/j.cell.2008.02.003. The initial step of spermatogenesis is the transition from male primitive germ cells (gonocytes) to undifferentiated spermatogonia in the neonatal testis. Jan 16, 2008 ... Germ Cells Restrict Their Totipotent Potential. Germ cells are often described as the ultimate totipotent stem cell. However, germ cells give ... Qiaolin Deng is studying this migration and maturation to learn more about infertility, epigenetic inheritance and cancer.