Pigments

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Def:-
It is depsitin f abnma mateia eithe tehniqay pathgiay physigiay.
assify:-
1- Atifats
2- Endgens
3- Exgens.
1-Atifats:-
Def:
Depsitin f mpnd as est f hemia sbstane .
Type:
1- fmain pigment.
It is bwn pigment pded by fixatin f tisse with aid stin f fmadehyde(aid fmadehyde haematin).
aid fmadehyde eat with haematin fnd in tisse t give aid fmadehyde haematin.
Peventatin:-
T pevent shd be sed bffeed PH7(Na2HP4. NaH2P4)
T emved add Satated Ahi pii aid f 5-10 minte.

2-Mey hide pigment:-
It easiy demnstated bease distibted ve setin ike having shape neede
. Peventatin:-
ann,t pevent it , bt if fm an be emved by Gam idine ga idine add idine t 70 ah ding dehydatin then teated the setin by Na thisphate t emve idine .

3- Dihmate pigment:-
Ae bwn bak ganes fnd when fix tisse by K dihmate as est we xide
Peventatin:-
Washing nde tap wate.
emve by 1% f aid ah t emve we xide washing nde tap wate t 10 minte.

4-Stain peipitate:-
Any satin ntain ah peipitate de evapatin espeiay nde heating.
Peventatin:-
an be pevent by bt setin in pen ja and heat inside the ven.

5-Maaia pigment:-
This est f emains f maaia paasite inside ed e .
Pevent:-emve by % 1 aid ah satated ahi pii aid.
 

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