It will be interesting to determine whether the NPCs of the adult brain also use fluctuating gene expression and how this relates to their decision to generate neurons or astrocytes
Freezing (below -20C) offers even greater long-term stability for certain peptides, though for GHK-Cu, refrigeration is usually sufficient for its typical shelf life
= reduced peptide bond (CH 2 -NH 2 ) Family # Ri- R3 1 2 3 1 hexanoyl pb pb pb heptanoyl Y pb pb pb pentanoyl Y pb pb pb butanoyl Y pb pb pb propanoyl Y pb pb pb acetanoyl Y pb pb pb isopropanoyl Y pb pb pb tert-butanoyl Y pb pb pb isobutanoyl Y pb pb pb benzoyl Y pb pb pb hexanoyl Y pb pb heptanoyl Y P b P b pentanoyl Y pb pb butanoyl Y pb pb propanoyl Y pb pb acetanoyl Y pb pb isopropanoyl Y pb pb tert-butanoyl Y pb pb isobutanoyl Y pb pb benzoyl Y pb pb hexanoyl 5 pb heptanoyl 5 pb pentanoyl 5 pb butanoyi 5 pb propanoyl 5 pb acetanoyl 5 pb isopropanoyl 5 pb tert-butanoyl 5 pb isobutanoyl 5 pb benzoyl 5 pb hexanoyl 5 pb pb heptanoyl 5 pb pb pentanoyl 5 pb pb butanoyi 5 pb pb propanoyl 5 pb pb acetanoyl 5 pb pb isopropanoyl 5 pb pb tert-butanoyl 5 pb b isobutanoyl 5 pb pb benzoyl 5 pb pb hexanoyl 5 pb pb pb heptanoyl 5 pb pb pb pentanoyl 5 pb pb pb butanoyi 5 pb pb pb propanoyl 5 pb pb pb acetanoyl 5 pb pb pb isopropanoyl 5 pb pb pb tert-butanoyl 5 pb pb pb isobutanoyl 5 p pb pb benzoyl F I 5 pb pb pb hexanoyl pb pb heptanoyl pb pb pentanoyl pb pb butanoyl pb pb propanoyl pb pb acetanoyl pb pb isopropanoyl pb pb tert-butanoyl pb pb isobutanoyl pb pb benzoyl pb pb hexanoyl pb heptanoyl P b pentanoyl pb butanoyl pb propanoyl pb acetanoyl pb isopropanoyl pb tert-butanoyl pb isobutanoyl pb benzoyl pb hexanoyl pb pb heptanoyl pb pb pentanoyl pb pb butanoyl pb pb propanoyl pb pb acetanoyl pb pb isopropanoyl pb pb tert-butanoyl F pb pb isobuianoyl F pb pb benzoyl F 5 pb pb hexanoyl C pb pb pb heptanoyl C pb pb pb pentanoyl c pb pb pb butanoyl c pb pb pb propanoyl c pb pb pb acetanoyl c pb b pb isopropanoyl c pb pb pb tert-butanoyl c pb pb pb isobutanoyl c pb pb pb benzoyl c pb pb pb hexanoyl C Pb pb heptanoyl C pb pb pentanoyl C pb pb butanoyl c pb pb propanoyl c pb pb acetanoyl c pb pb isopropanoyl c pb pb tert-butanoyl c 5 pb pb isobutanoyl c pb pb benzoyl c pb pb hexanoyl C pb heptanoyl C pb pentanoyl c pb butanoyl c pb propanoyl c pb pb pb pb pb pb hexanoyl C pb pb heptanoyl C pb pb pentanoyl C pb pb butanoyl C pb pb propanoyl C pb pb acetanoyl c pb pb isopropanoyl c pb pb tert-butanoyl c pb pb isobutanoyl c pb b benzoyl c pb pb 1 -16 Same pattern as families I -4 with R2=S 17-20 Same pattern as families 1 -4 with R2-T 21 -24 Same pattern as families 1 -4 with R2=D 25-28 Same pattern as families 1 -4 with R2=E 29-32 Same pattern as families 1 -4 with R2=Y, R3=V 33-36 Same pattern as families 1 -4 with R2=F, R3=V 37-40 Same pattern as families 1 -4 with R2= , R3=V 41 -44 Same pattern as families 1 -4 with R2=S, R3=V 45-48 Same pattern as families 1-4 with R2=T, R3=V 49-52 Same pattern as families 1 -4 with R2=D, R3=V 53-56 Same pattern as families 1 -4 with R2=E, R3=V 57-85 Same pattern as families 29-56 with R3=L 86-170 Same pattern as families 1-85 with n=3 342 D-norleucine Y I 5 pb pb pb D-norleucine F I 5 pb pb pb D-norleucine C I 5 pb pb pb D-norleucine S I 5 pb pb pb D-norleucine T I 5 pb pb pb D-norlencine D I 5 pb pb pb D-norleucine E I 5 pb pb pb D-norleucine G I 5 pb pb pb 343 D-norleucine Y I 5 pb pb D-norleucine F I 5 pb pb D-norleucine C I 5 pb pb D-norleucine S I 5 pb pb D-norleucine T 1 5 pb pb D-norleucine D I 5 pb pb D-norleucine E I 5 pb pb D-norleucine G I 5 pb pb 344 D-norleucine Y I 5 pb pb D-norleucine F I 5 pb pb D-norleucine C I 5 Pb pb D-norleucine S I 5 pb pb D-norleucine T I 5 pb pb D-norleucine D I 5 pb pb D-norleucine E I 5 pb pb D-norleucine G I 5 pb pb 345 D-norleucine Y I 5 pb D-norleucine F I 5 pb D-norleucine C I 5 pb D-norleucine S I 5 pb D-norleucine T I 5 pb D-norleucine D I 5 pb D-norleucine E I 5 pb D-norleucine G I 5 pb 346-349 Same pattern as families 342-345 with R3=V 350-353 Same pattern as families 342-345 with R3=L 354-365 Same pattern as families 342-353 with R1=D norvaline 366-377 Same pattern as families 342-345 with R3=D-lysine 378-389 Same pattern as families 342-345 with R3=D-arginine 390-401 Same pattern as families 342-345 with R3=D S-methyl cysteine 402-457 Same pattern as families 342-401 with n=3 458-513 Same pattern as families 342-401 with n=4 514-569 Same pattern as families 342-401 with n=6 Alternatively, the analogs or growth factor mimics of the present invention may also be represented as comprised of four elements joined by covalent peptide or reduced peptide bonds, as follows: I - II - III - rv where I = an acid such as heptanoic, hexanoic, pentanoic, butyric, proprionic, acetic, benzoic, or substituted benzoic acid, and isoforms thereof
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When the V max values are set to 50% of their normal values, the number of functional hepatocytes decreases to 75% of normal after 20 hours (the blue curve)
