Why are cancer cells or abnormal cells used in tissue cultures

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry