specialization; specialisation; differentiation
incessant; constant; continuous; perpetual; everlasting
conversely; on the contrary
representative; exemplary; model
germ cell; reproductive cell
single; solo; solitary; just one; only one
split; division; break up
formation; molding; making up; repair (e.g. plastic surgery); replacement; -plasty
to bury; to embed; to implant
having done that; if that is done; if it is done in that way
conformity; compatibility; adaptability; congruity; congruence
method of treatment; cure; remedy
side effect; adverse reaction
experiments using animals; in-vivo testing; animal testing
open; public; overt; free; unreserved; uninhibited
pure; true; genuine; unmixed
have to (verb); must (verb); is indispensable; absolutely necessary
to consider as; to regard (as equivalent); to deem (as); to equate
future; possible; potential; prospective
ground-breaking; revolutionary; unprecedented; epoch-making
agreement; consent; same opinion; same view; same meaning
supplementary examination
assertion; declaration; affirmation
to be certain of; to have faith in; to believe completely; to trust (someone completely)
no chance of; no way that; certainly not; will never happen
to stab; to stick; to pierce; to thrust
to insist on one's own ideas
pleasantly warm; nice and warm; repeatedly (hitting someone); again and again; over and over
seasoning; flavoring; flavouring; addition; inclusion; taking into account
carelessly; thoughtlessly; inadvertently
sleep; sleeping; inactivity; death
by any standard; (not) even as flattery
manners; behavior; behaviour
to blink (one's eyes); to wink; to bat
side street (often parallel to a main street); back street; alley; alleyway
to decline (in prosperity); to become deserted; to become desolate; to taper off (of a sound)