In the United States, both companies will market the drug, which is called G-CSF, for granulocyte colony stimulating factor.

Sloan-Kettering scientists are testing one substance, granulocyte colony stimulating factor, as an aid in restoring cells of the immune system in patients suffering from bladder cancer.

The Chugai patents involve purification of human granulocyte colony stimulating factor, or G-CSF.

Granulocyte colony stimulating factor (GCSF) are naturally occurring glycoproteins that stimulate white blood cell proliferation.

The nervousness centers on whether the company's second drug, granulocyte colony stimulating factor, or G-CSF, will be the blockbuster it is expected to be.

G-CSF, for granulocyte colony stimulating factor, promotes the growth of white blood cells known as granulocytes that are a major defense against bacterial and fungal infections.

Amgen's Neupogen is a granulocyte colony stimulating factor, or G-CSF, which prompts the creation of and activates granulocytes.

To do this, the investigators give the donor a hormone, granulocyte colony stimulating factor, or G.C.S.F., that forces the marrow to increase its stem cell production.

A second product, granulocyte colony stimulating factor, or G-CSF, has completed clinical trials and been submitted to the F.D.A. but is still some distance from approval.

The Amgen Corporation received approval last week for Neupogen, its brand of granulocyte colony stimulating factor, a hormone for increasing white blood cells in cancer patients receiving chemotherapy.

The drug, known as granulocyte colony stimulating factor, or G-CSF, was developed and will be sold by Amgen Inc., a biotechnology company in Thousand Oaks, Calif.

I had the surgery and chemotherapy on Friday, and I was injected with GCSF (granulocyte colony stimulating factor) on the following Monday to improve my white-cell counts.

Its biosimilars, such as granulocyte colony stimulating factor (GCSF), streptokinase, reteplase, human growth hormone, etc. are manufactured in a facility equipped to handle both intracellular and extracellular products.

A promising follow-up drug, Granulocyte Colony Stimulating Factor, G-CSF, which could come to market about two years after EPO, may also lead to a patent dispute with Chugai.

And two weeks ago, Amgen received a patent for recombinant G-CSF (Granulocyte Colony Stimulating Factor), which Morgan Stanley estimates will be a $500 million product within several years.

Morning pseudoneutropenia is thought to be due to diurnal variation in the amount of circulating white blood cells and changes in the levels of hematopoietic cytokines and granulocyte colony stimulating factor (GCSF).

The two drugs - stem cell factor and granulocyte colony stimulating factor - stimulated the bone marrow to produce numerous stem cells, which entered the bloodstream, migrated to the damaged heart, and turned into new heart muscle.

If Mr. Getty's white count falls too low, he will be given a standard drug known as granulocyte colony stimulating factor (GCSF) with the aim of stimulating greater marrow production of white blood cells, or granulocytes.

These studies consistently show accelerated neutrophil recovery without an increase in leukemic relapse in patients treated with either granulocyte colony stimulating factor (G-CSF) or granulocyte-macrophage colony stimulating factor (GM-CSF).

These hormones, granulocyte macrophage colony stimulating factor, or G.M.C.S.F., and granulocyte colony stimulating factor, or G.C.S.F., not only signal the bone marrow to make more white blood cells but also activate white blood cells to fight infections.

Amgen Inc., a biotechnology company based in Thousand Oaks, Calif., said that F. Hoffman-LaRoche & Company of Basel, Switzerland, had agreed to market Amgen's Neupogen recombinant granulocyte colony stimulating factor, G-CSF, in the European Community.