Nowadays scientists do a lot 'o' (ortog) experiments and researches. 'The' (ortog) 'invites' (zle slowo) high-technology creams, ointmentS (l. mnoga), 'medicaments' (zle slowo) and other things which make our life better and more healthIER. But have you ever thought what happenS in laboratories?
Firstly activity on animals is very 'danger' (zla czesc zdania) for them. If something goES wrong, animals can be injured or they can die.
They are threatened only like 'a' (niepotr) guinea pigS. Animals
'have not' (napisz to gram - DO NOT HAVE enough attention, 'playing' (nie rozumiem co to slowo tutaj robi? niby z kim oni 'playing'),they have only food.They DO NOT have 'not' ANY relationship with people. They do not live in their natural habitat , theY DO NOT have 'not' ANY contact with 'oder' (ortog) animals.If they 'ever be' ARE EVER free, they will not know how to survive out of THE laboratory.
On the 'oder' (co tu z tym niemieckim?) hand animals could save our life. Scientists 'tasted' (zle slowo- znaczy calkowicie cos innego) 'at' (niepotr) animals a lot of 'medicaments' (zle slowo), for example for cancer OR HIV. Also they 'do at animals surgeons' (pomysl o tym, surgeons-to lekarze ktorzy wykonuja SURGERIES), for example transplantation. This kind of activity developS (it-developS) doctors qualifications.
To sum up, scientific researches on animals are not good, but 'it' (THEY (dlatego ze researches to l. mn) could help us to heal 'a lot of' (napisz numerous) people. Fortunately 'is is less spread' (tego nie rozumiem) because science is becoming more and more inoffensive. In laboratories 'are used machines' (napisz to inaczej...machines as well as ...computers ARE USED SO there is no need to use animals.