Igura K, Zhang X, Takahashi K, et al. Isolation and characterization of mesenchymal progenitor cells from chorionic villi of human placenta. Cytotherapy 2004;6:543-53.
These new neurons had developed from neural progenitor cells, a type of undifferentiated neuron akin to a stem cell, in a process scientists call neurogenesis.
Now, the vast majority of bone marrow is made of hematopoietic cells which are the early progenitor cells that can differentiate into other cell types.
Then, progenitor cells, which can develop into various bodily tissues, form a mass at the site of injury and nearby nerves secrete growth-promoting proteins.
They were pleased and flattered by the words of the strange Tarmangani, who called himself Mangani and spoke the language of the hairy progenitors of man.
If they go to the bone marrow, they can crowd out normal bone marrow progenitor cells and decrease the number of healthy red blood cells, white blood cells and platelets.
B cells and NK cells complete their development where they started - in the bone marrow, whereas some lymphoid progenitor cells migrate to the thymus where they develop into T cells.
All of these progenitors of the organic movement shared the same values that we, who embrace organic food, still do today—recognize the farm as an interdependent organic whole.
Now, with the early progenitors of mammals, almost before they deserved to be thus designated, is it not at least possible that the young might have been similarly nourished?