F
FACS

Fluorescent Activated Cell Sorter

FACT

Foundation for the Accreditation of Cellular Therapies

FBS

Fetal Bovine Serum

FDA

Food and Drug Administration

Ficoll-Hypaque

Reagent applied for density gradients.

FITC

Fluorescein isothiocyanate

Fluorescence-activated cell sorter (FACS)

A machine that measures cell size, granularity and fluorescence due to bound florescent antibodies as single cells pass in a stream through a laser light and photo detectors.  The analysis of single cells in this way is called flow cytometry and the instruments that carry out the measurements are called flow cytometers.

Fresh

An unexpanded cellular therapy product that has never been cryopreserved.  May also refer to products that are ex vivo expanded from previously frozen cells.

G
G-CSF

Granulocyte colony stimulating factor

Gene Manipulation

The insertion of one or more exogenous genes into hematopoietic cells or other cell types.

GM-CSF

Granulocyte-macrophage colony stimulating factor

Graft-versus-host disease (GVHD)

Manifestations of the reaction of engrafted donor cells against host tissue; clinical symptoms involve the skin, liver, and intestinal tract with potential for effect on additional organs.  Acute GVHD occurs usually within the first 100 days post transplant and is initiated by T lymphocytes of donor origin.  Chronic GVHD is generally seen after the first 100 days and may also be caused by donor T cells, but cytokines (IFN-g, TNF, IL-1) may also play a role in the disease process.

Graft-versus-leukemia (GVL) effect

The immune mediated elimination of residual leukemia by donor-derived cells infused with the stem cell graft.  Similar effects in diseases other than leukemia are termed Graft-versus-Tumor reactions.

Granulocyte

Any cell containing granules; leukocyte containing neutrophil, basophil or eosinophil granules in its cytoplasm.

Granulocyte colony-stimulating factor (G-CSF)

A hematopoietic growth factor that induces the growth and differentiation of progenitor cells committed to the neutrophil lineages and enhances the functional activities of effector cells of the granulocyte lineage.  Used clinically to increase the rate of granulocyte recovery following chemotherapy and transplantation, and to induce CD34+ hematopoietic progenitor cells into the circulation for the collection of peripheral blood stem cells.

Granulocyte macrophage colony-stimulating factor (GM-CSF)

A hematopoietic growth factor that regulates the growth and differentiation of progenitor cells and enhances the functional activities of effector cells of the granulocyte-macrophage lineage.  Used clinically to increase the rate of granulocyte recovery following chemotherapy and transplantation, and to induce CD34+ hematopoietic progenitor cells into the circulation for the collection of peripheral blood stem cells.

GTP

Good Tissue Practices

GVHD

Graft versus host disease

GVL

Graft versus leukemia

H
Harvest

The collection of HPC-M, HPC-A or other products for use in transplantation.