31. The pathogenic process of PFCs normally involves forming channels or pores at the target cells 'membranes. 32. The protein gp120 is necessary during the initial binding of HIV to its target cell . 33. It might be possible one day to block these kinds of interactions in target cells . 34. The primary problem with using RNAi in gene modulation is drug delivery to target cells . 35. Research has shown that ADEP-activated ClpP targets cell division rather than filaments before cell death. 36. At the same time, developing neurons send out axon outgrowths that contact their target cells . 37. Biolistics introduces DNA randomly into the target cells . 38. The neurotransmitter chemical then diffuses across to receptors located on the membrane of the target cell . 39. YopJ is activated in eukaryotic cells by interaction with target cell Phytic acid ( IP6 ). 40. The CTL precursors include naive T c cells since they are incapable of killing target cells .