[R] Reading data with blank elements

[Ahamarshan jn]

Hi,
 I have a dataset saved in *.csv format, that contains
13 columns (the first column being the title name and
the rest experiments) and about 2500 rows.
Not all columns in the row have data in it
i.e for eg
					
BS00,-0.084,0.0136,-0.1569,-0.6484,1.103,1.7859,0.40287,0.5368,0.08461,-0.1935,-0.147974,0.30685

BS01,0.491270283,0.875826172,,,,,,,,,,

BS02,0.090794476,0.225858954,,,0.32643,0.34317,0.133145295,,,0.115832599,0.47636458,

BS03,0.019828221,-0.095735935,-0.122767219,-0.0676,0.002533,-0.1510361,0.736247,2.053192,-0.423658,0.4591219,1.1245015,

BS04,-0.435189342,-0.041595955,-0.781281128,-1.923036,-3.230167102,,,,0.152322609,-1.495513519,,
				

I am using R to perform a correlation, but I am
getting an error while trying to read the data as


">
person.data<-read.table("datafile.csv",header=TRUE,sep=',',row.names=1)

Error in scan (file = file, what = what, sep = sep,
quote = quote, dec = dec,  : 
        line 1919 did not have 13 elements
Execution halted "
 
The error looks as though there is a problem with the
last element being not read when it is blank. I could
introduce terms like "na" to the blank elements but I
donot want to do that because this will hinder my
future analysis. 

Can some one suggest me a solution to overcome this
problem while reading the data? , or is there
something that I have missed to make the data
readable. 

Thank you in advance, 

PS: The data was imported from a experiment and saved
in excel sheet as a *.csv and then used.