Sorry to be the bearer of bad tidings but these are the start of new growth.
Flower buds will form on the axils where the spines come from along the side of branches. When in flower the veins in the plant are really prominent as they deliver nutrients to the buds, showing red through the green when viewed with light behind them. Keep watering throughout the summer with an occasional feed (I use tomato food) and then keep cool and drier over the winter. It should flower next spring.
Regards