Correspondence to Dr John Harvey, North Bristol Lung Centre, Southmead Hospital, Bristol BS10 5NB, UK; john.harvey{at}nbt.nhs.uk Secondary pneumothorax (SSP) is associated with underlying lung disease ...

Murine hematopoietic cells were transduced with ecotropic supernatants (Figure 1b), using conditions that led to efficient gene marking with low provirus copies (<3) per cell. 23 Polyclonal ...