M/Z: 855.5574

Hit 3 annotations: PGP(a-13:0/i-24:0)_[M+H-H2O]+; PG(18:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S))_[M+H]+; PE(22:5(4Z,7Z,10Z,13Z,16Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z))_[M+NH4]+

在BioDeep NovoCell知识数据库中，参考离子总共被划分为4个级别。

Confirmed: 这个参考离子已经通过手动审计得到确认和验证。
Reliable: 这个参考离子可能在特定的解剖组织环境中高度保守。
Unreliable: 这个参考离子具有较高的排名价值，但缺乏可重复性。
Unavailable: 由于排名价值低且缺乏可重复性，这个参考离子不应用于注释。

Found 2 Reference Ions Near m/z 855.5574

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000047693 Unreliable	855.5556	855.5556 ~ 855.5556 MzDiff: `none`	PGP(a-13:0/i-24:0) (BioDeep_00000108884) Formula: C43H86O13P2 (872.5543)	2.17 (100%)	Homo sapiens [UBERON:0013067] colorectal mucosa
MSI_000065705 Unreliable	855.5544	855.5544 ~ 855.5544 MzDiff: `none`	PG(18:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)) (BioDeep_00000193827) Formula: C46H79O12P (854.5309)	1.58 (100%)	Homo sapiens [UBERON:0001155] colon

Found 7 Sample Hits

Metabolite	Species	Sample
PGP(a-13:0/i-24:0) Formula: C43H86O13P2 (872.5543) Adducts: [M+H-H2O]+ (Ppm: 6.6)	Homo sapiens (Liver)	20171107_FIT4_DHBpos_p70_s50 Resolution: 50μm, 70x70 Description
PGP(a-13:0/i-24:0) Formula: C43H86O13P2 (872.5543) Adducts: [M+H-H2O]+ (Ppm: 5.3)	Homo sapiens (colorectal adenocarcinoma)	80TopL, 50TopR, 70BottomL, 60BottomR-profile Resolution: 17μm, 137x136 Description The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).
PG(18:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)) Formula: C46H79O12P (854.5309) Adducts: [M+H]+ (Ppm: 17.7)	Homo sapiens (colorectal adenocarcinoma)	240TopL, 210TopR, 230BottomL, 220BottomR-centroid Resolution: 50μm, 142x141 Description
PG(18:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)) Formula: C46H79O12P (854.5309) Adducts: [M+H]+ (Ppm: 19)	Homo sapiens (colorectal adenocarcinoma)	200TopL, 170TopR, 190BottomL, 180BottomR-centroid Resolution: 50μm, 132x126 Description
PG(18:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)) Formula: C46H79O12P (854.5309) Adducts: [M+H]+ (Ppm: 17.3)	Homo sapiens (colorectal adenocarcinoma)	160TopL,130TopR,150BottomL,140BottomR-centroid Resolution: 50μm, 142x136 Description
PGP(a-13:0/i-24:0) Formula: C43H86O13P2 (872.5543) Adducts: [M+H-H2O]+ (Ppm: 2.9)	Homo sapiens (colorectal adenocarcinoma)	120TopL, 90TopR, 110BottomL, 100BottomR-centroid Resolution: 50μm, 132x136 Description
PE(22:5(4Z,7Z,10Z,13Z,16Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z)) Formula: C49H76NO8P (837.5308) Adducts: [M+NH4]+ (Ppm: 8.5)	Drosophila melanogaster (brain)	Drosophila18 Resolution: 5μm, 686x685 Description Sample information Organism: Drosophila melanogaster Organism part: Brain Condition: Healthy Sample preparation Sample stabilisation: Frozen Tissue modification: Frozen MALDI matrix: 2,5-dihydroxybenzoic acid (DHB) MALDI matrix application: TM sprayer Solvent: Aceton/water MS analysis Polarity: Positive Ionisation source: Prototype Analyzer: Orbitrap Pixel size: 5μm × 5μm Annotation settings m/z tolerance (ppm): 3 Analysis version: Original MSM Pixel count: 469910 Imzml file size: 696.23 MB Ibd file size: 814.11 MB