Save variable from multiple file processing

I want to save matrix A for each processed file. How do I do this? Thanks for reading!

files = dir('*.txt');

data = cell(length(files));   
for ii = 1:length(files)
    data{ii} = load(files(ii).name);
end

data = cat(1,data{:});

for n=1:1:size(data,1)
   if n<=4  %1-4 are mU
       mU(n)=data(n,2);  
   elseif n>=5 && n<=8  %5-8 are mM
       mM(n)=data(n,2);
   elseif n>=9 && n<=12  %9-12 are mL
       mL(n)=data(n,2);
   elseif n>=13 && n<=16  %13-16 are bU
       bU(n)=data(n,2);
   elseif n>=17 && n<=20  %17-20 are bM
       bM(n)=data(n,2);
   elseif n>=21 && n<=24 %21-24 are mL
       bL(n)=data(n,2);
   else
   end;
end;

mU(mU == 0) = [];
mM(mM == 0) = [];
mL(mL == 0) = [];
bU(bU == 0) = [];
bM(bM == 0) = [];
bL(bL == 0) = [];

A = cat(2, mU', mM', mL', bU', bM', bL')

[Oleg Komarov]

As in your previous post, you have already imported all of the files and converted data into A. To save it to a .mat file use 'save'. For more info doc save