(Breast-cancer patients) can be with a (childbirth history).
Cultures can be constituted-of-or-filled-with (breast-cancer cells).
A new generation can be constituted-of-or-filled-with (breast-cancer preventives).
A study can be constituted-of-or-filled-with (breast-cancer patients).
Some percent can be constituted-of-or-filled-with (breast-cancer cases).