TASK DEFINITION: Translate the given Spanish text to English
PROBLEM: Formula (A-) a .

SOLUTION: Formula (A-)a.

PROBLEM: Each panel is made from flexible fabric layers.

SOLUTION: Cada panel se hace de capas de tela flexible.

PROBLEM: The present invention relates to a poxvirus comprising a defective F4L and/or I4L gene, to composition comprising such poxvirus and to the methods and use of such compositions and poxviruses for therapeutic purposes, and more particularly for the treatment of cancer.

SOLUTION:
La presente invención se refiere a un poxvirus que comprende un gen F4L y/o l4L, a una composición que comprende los poxvirus y a métodos de estas composiciones y poxvirus para propósitos terapéuticos y más particularmente para el tratamiento de cáncer.