Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied.
Kit use of animals for medical testing, single kit for one student or group, Nerve cell communication may be altered by drugs that block neurotransmitter receptors, Animal testing may be used to test the effects of drugs
Kit use of animals for medical testing, unassembled kit supplies for 10 students or groups, Nerve cell communication may be altered by drugs that block neurotransmitter receptors, Animal testing may be used to test the effects of drugs