Abstract: The present invention is concerned with methods of producing transgenic plants, in particular poppy plants, by way of transfecting and/or regenerating plant material under specified culture conditions which prevent, reduce the rate of or delay the rise in pH of the culture medium.

Abstract: Disclosed is a splash block for use with a combination bathtub/shower structure of the type having a substantially planar, horizontal rim surface extending underneath a shower curtain rod. The splash block comprises a ramp portion and a collar portion, wherein the ramp portion has a drainage surface bounded by a peripheral edge consisting of a drip edge and a collar-receiving edge, and wherein the collar portion extends around the collar-receiving edge, and is positionable at an operative position on said rim surface whereat said ramp portion substantially overlies one of said exposed contiguous corners with the drip edge presenting towards the bathing recess, with the drainage surface of said ramp portion presenting upwardly and sloping downwardly to the drip edge, and with the collar portion projecting upwardly.