The day after the March 3 primary, President Donald Trump pledged to endorse either John Cornyn or Ken Paxton “soon,” and call on the other to drop out. He has yet to make an endorsement.

Lysosomes are dynamic organelles that receive membrane traffic input from the secretory, endocytic, autophagic and phagocytic pathways. They can also fuse with the plasma membrane. Live-cell imaging ...