Claim: In humans, two ubiquitous plastin isoforms have been identified; namely, L, expressed only in hemopoietic cell lineages, and T, found in all other normal cells of solid tissues that have replicative potential.
Evidence: In humans, two ubiquitous plastin isoforms (L and T) have been identified. The L isoform is expressed only in hemopoietic cell lineages, while the T isoform has been found in all other normal cells of solid tissues that have replicative potential (fibroblasts, endothelial cells, epithelial cells, melanocytes, etc.). 
In humans, two ubiquitous plastin isoforms (L and T) have been identified. The L isoform is expressed only in hemopoietic cell lineages, while the T isoform has been found in all other normal cells of solid tissues that have replicative potential (fibroblasts, endothelial cells, epithelial cells, melanocytes, etc.).