The Gorringe Bank corresponds to an upper mantle peridotite ridge enclosing a 500‐m thick/ 50‐km long laccolith‐like body of gabbro, locally cut and poorly covered by tholeiitic rocks. Strain and kinematic analysis of orientated gabbros and peridotites sampled during the GORRINGE diving cruise (1996) provides new kinematic constraints on extensional high‐temperature deformation recorded at deep levels during stretching, near an accreting centre axis of a mantle‐dominant oceanic lithosphere. It is argued that the Gorringe Bank lithosphere formed at an oceanic ultra‐slow, N010°–020°‐trending accreting centre, mostly by passive tectonic denudation of the mantle, without any synchronous large magmatism. This peculiar lithosphere may be representative of the Iberia oceanic domain located between the continent and the J anomaly ridge, which likely marks the beginning of true spreading at an oceanic spreading ridge.
The lower survival of patients with the highest levels of PLZF suggests that this protein may be a marker of progression in B-CLL. The absence of co-ordinated regulation of PLZF and cyclin A genes in B-CLL and in a malignant B-cell line may indicate a loss of cyclin A control by PLZF in B-CLL and other B-cell disorders. Deregulation of PLZF could thus play a role in B-cell malignancy.
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